Rework c99status.html

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Headers	show Return-Path: <gcc-patches-return-352898-incoming=patchwork.ozlabs.org@gcc.gnu.org> DomainKey-Signature: a=rsa-sha1; c=nofws; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:date :from:to:cc:subject:in-reply-to:message-id:references :mime-version:content-type; q=dns; s=default; b=Mox98k9PTCDefrXp U5L8SGpQl1+DqxAIYP82UlfOfnbobdmmETaEZWyk5N6/A1UKCmb8o6JsavSbO/Zf vLgvJHJ99kDPLm7d6V9fA82NN5gsCxRh0v0KXUlhQYidwHIY1GByWVfLfPGlfXeg gTYPmCmeFC6KU1hHXZ1fp2N6TNE= Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk Sender: gcc-patches-owner@gcc.gnu.org Date: Fri, 1 Nov 2013 00:37:51 +0100 (CET) From: Gerald Pfeifer <gerald@pfeifer.com> To: "Joseph S. Myers" <joseph@codesourcery.com> cc: gcc-patches@gcc.gnu.org Subject: Re: Rework c99status.html In-Reply-To: <Pine.LNX.4.64.1310281300130.25699@digraph.polyomino.org.uk> Message-ID: <alpine.LNX.2.00.1311010029120.28331@trevally.site> References: <Pine.LNX.4.64.1310271533510.6968@digraph.polyomino.org.uk> <alpine.LNX.2.00.1310280201480.28331@trevally.site> <Pine.LNX.4.64.1310281300130.25699@digraph.polyomino.org.uk> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII

Index: .htaccess =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/.htaccess,v retrieving revision 1.29 diff -u -3 -p -r1.29 .htaccess --- .htaccess 26 Aug 2012 19:47:34 -0000 1.29 +++ .htaccess 31 Oct 2013 23:27:57 -0000 @@ -20,6 +20,19 @@ Redirect permanent /gcc-3.1/testing-lapa Redirect permanent /gcc-3.1/testing-pooma.html http://gcc.gnu.org/testing/testing-pooma.html Redirect permanent /gcc-3.1/testing-qt.html http://gcc.gnu.org/testing/testing-qt.html +Redirect permanent /gcc-3.0/c99status.html http://gcc.gnu.org/c99status.html +Redirect permanent /gcc-3.1/c99status.html http://gcc.gnu.org/c99status.html +Redirect permanent /gcc-3.3/c99status.html http://gcc.gnu.org/c99status.html +Redirect permanent /gcc-3.4/c99status.html http://gcc.gnu.org/c99status.html +Redirect permanent /gcc-4.0/c99status.html http://gcc.gnu.org/c99status.html +Redirect permanent /gcc-4.1/c99status.html http://gcc.gnu.org/c99status.html +Redirect permanent /gcc-4.2/c99status.html http://gcc.gnu.org/c99status.html +Redirect permanent /gcc-4.3/c99status.html http://gcc.gnu.org/c99status.html +Redirect permanent /gcc-4.4/c99status.html http://gcc.gnu.org/c99status.html +Redirect permanent /gcc-4.5/c99status.html http://gcc.gnu.org/c99status.html +Redirect permanent /gcc-4.6/c99status.html http://gcc.gnu.org/c99status.html +Redirect permanent /gcc-4.7/c99status.html http://gcc.gnu.org/c99status.html + Redirect permanent /libstdc++/mail.html http://gcc.gnu.org/lists.html Redirect permanent /libstdc++/links.html http://gcc.gnu.org/readings.html Redirect permanent /onlinedocs/libstdc++/faq/index.html http://gcc.gnu.org/onlinedocs/libstdc++/faq.html Index: gcc-3.0/c99status.html =================================================================== RCS file: gcc-3.0/c99status.html diff -N gcc-3.0/c99status.html --- gcc-3.0/c99status.html 28 Oct 2012 11:05:08 -0000 1.8 +++ /dev/null 1 Jan 1970 00:00:00 -0000 @@ -1,382 +0,0 @@ -<html> - -<head> -<title>Status of C99 features in GCC 3.0</title> -</head> - -<body> -<h1>Status of C99 features in GCC 3.0</h1> - -This table is based on the list in the foreword to the printed -standard ISO/IEC 9899:1999 (E). - -Where "Library Issue" is listed in conjunction with some other -status, this means that some compiler support is needed for the -library support, or desirable in conjunction with it. Note that the -headers required of conforming freestanding implementations (clause 4 -paragraph 6) do not count as library issues. - -This page describes the C99 support in GCC 3.0. Information on <a -href="../c99status.html">C99 support in mainline GCC</a> is also -available. - -See below the table for further notes on some issues. - -<table border="1"> -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> - -<tr><td>restricted character set support via digraphs and - <code><iso646.h></code> (originally specified in AMD1)</td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>wide character library support in - <code><wchar.h></code> and <code><wctype.h></code> - (originally specified in AMD1)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>more precise aliasing rules via effective type</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>restricted pointers</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>variable-length arrays</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>flexible array members</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td><code>static</code> and type qualifiers in parameter array declarators</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>complex (and imaginary) support in <code><complex.h></code></td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>type-generic math macros in <code><tgmath.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>the <code>long long int</code> type and library functions</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>increased minimum translation limits</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>additional floating-point characteristics in <code><float.h></code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>remove implicit <code>int</code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>reliable integer division</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>universal character names (<code>\u</code> and <code>\U</code>)</td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>extended identifiers</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>hexadecimal floating-point constants and - <code>%a</code> and <code>%A</code> - <code>printf</code>/<code>scanf</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>compound literals</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>designated initializers</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td><code>//</code> comments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>library functions in <code><inttypes.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>extended integer types in <code><stdint.h></code></td> - <td></td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>remove implicit function declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>preprocessor arithmetic done in <code>intmax_t</code>/<code>uintmax_t</code></td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>mixed declarations and code</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new block scopes for selection and iteration statements</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer constant type rules</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>integer promotion rules</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>macros with a variable number of arguments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>the <code>vscanf</code> family of functions - in <code><stdio.h></code> and <code><wchar.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional math library functions in <code><math.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>floating-point environment access in <code><fenv.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>IEC 60559 (also known as IEC 559 or IEEE arithmetic) support</td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>trailing comma allowed in <code>enum</code> declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>%lf</code> conversion specifier allowed in <code>printf</code></td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>inline functions</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>the <code>snprintf</code> family of functions in <code><stdio.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>boolean type in <code><stdbool.h></code></td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>idempotent type qualifiers</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>empty macro arguments</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new struct type compatibility rules (tag compatibility)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional predefined macro names</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>_Pragma</code> preprocessing operator</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>standard pragmas</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>__func__</code> predefined identifier</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>va_copy</code> macro</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional <code>strftime</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>deprecate <code>ungetc</code> at the beginning of a binary file</td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>remove deprecation of aliased array parameters</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>conversion of array to pointer not limited to lvalues</td> - <td></td><td></td> - <td></td><td>Missing</td> -</tr> - -<tr><td>relaxed constraints on aggregate and union initialization</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed restrictions on portable header names</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>return</code> without expression not permitted - in function that returns a value (and vice versa)</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> -</table> - -<h2>Further notes</h2> - -<ul> - -<li>cpp has no support for multibyte character sets.</li> - -<li>cpp arithmetic is done in <code>HOST_WIDEST_INT</code>, which may not -be the same as the target <code>intmax_t</code> required by C99.</li> - -<li>IEC 60559 is IEEE 754 floating point. This works if and only if -the hardware is perfectly compliant, but GCC does not define -<code>__STDC_IEC_559__</code> or implement the associated standard -pragmas.</li> - -<li>The extra definitions in <code><float.h></code> (of -<code>FLT_EVAL_METHOD</code> and <code>DECIMAL_DIG</code>) are -included in most versions of <code><float.h></code>, but not yet -<code>float-c4x.h</code>, <code>float-m68k.h</code> or -<code>float-vax.h</code>. Also, some targets such as Solaris use the -system <code><float.h></code> but do not fix it to add these -definitions.</li> - -<li>Compiler support is needed for <code>math_errhandling</code>; see -messages <a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00008.html">1</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00014.html">2</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00015.html">3</a> -on this subject to libc-hacker.</li> - -<li>In some places, <code>-pedantic</code> warnings don't take proper -account of the standard version selected.</li> - -<li><code>__func__</code> should not take part in string -concatenation, should be a distinct array from any identical string -literal, and should have <code>const</code>-qualified element type. -See <a href="http://gcc.gnu.org/PR460">PR -c/460</a> and testcases <code>c99-func-[234].c</code>.</li> - -<li>GCC doesn't have <code>wprintf</code>, <code>wscanf</code> and -<code>wcsftime</code> format checking support.</li> - -<li>Complex numbers support may be broken (some problems with -passing/returning complex values on 64-bit targets, and not checked -against the requirements of the C99 standard). However, the -<code>_Complex</code> keyword now works.</li> - -<li>C99 <code>inline</code> functions do not generate an external -definition if declared without <code>extern</code>, but do if declared -with <code>extern</code>, the opposite of GCC's handling of -<code>inline</code> and <code>extern inline</code>. This will -probably require existing glibc headers to be fixincluded.</li> - -<li>The C99 semantics of variable length arrays (VLAs) are not fully -implemented by the existing GCC extension: the concept of variably -modified (VM) types, and the rules for what identifiers can be -declared with VLA or VM types, are not implemented (for example, GCC -allows elements of VM type in a structure with block scope); while the -syntax for arrays to be declared with <code>[*]</code> in parameter -declarations is present, the semantics are not; and in general the -implementation of VLAs has not been checked against C99 requirements.</li> - -<li>Compound literals have some problems: GCC doesn't fully support compound -literals of array type (some spurious errors about non-lvalue arrays -may occur when they are used); non-<code>const</code> compound literals need -to be put in a temporary of appropriate storage duration (possibly -copied from read-only storage, depending on the literal; or placed in -writable storage, when of static storage duration). Getting this -right requires the new block scopes for selection and iteration -statements to be done first.</li> - -<li>The constraints on where structures with flexible array members -may be used (that they, and unions containing them (possibly -recursively), shall not be members of structures or elements of -arrays) are not checked.</li> - -<li>The list above differs from that in the C99 standard as follows: -"LIA compatibility annex" is removed, since it refers to C99's -conformance to another standard rather than something for C -implementations to do. The <code><stdint.h></code> and -<code><inttypes.h></code> entries have been separated, but are a -single entry in C99. The foreword to C99 wrongly refers to the -<code>VA_COPY</code> macro, but in the normative text (7.15.1.2) it is -<code>va_copy</code>, so that correction has been made to the list.</li> - -</ul> - -</body> -</html> Index: gcc-3.1/c99status.html =================================================================== RCS file: gcc-3.1/c99status.html diff -N gcc-3.1/c99status.html --- gcc-3.1/c99status.html 28 Oct 2012 11:05:08 -0000 1.7 +++ /dev/null 1 Jan 1970 00:00:00 -0000 @@ -1,375 +0,0 @@ -<html> - -<head> -<title>Status of C99 features in GCC 3.1 and 3.2</title> -</head> - -<body> -<h1>Status of C99 features in GCC 3.1 and 3.2</h1> - -This table is based on the list in the foreword to the printed -standard ISO/IEC 9899:1999 (E), as amended by ISO/IEC -9899:1999/Cor.1:2001 (E). - -Where "Library Issue" is listed in conjunction with some other -status, this means that some compiler support is needed for the -library support, or desirable in conjunction with it. Note that the -headers required of conforming freestanding implementations (clause 4 -paragraph 6) do not count as library issues. - -This page describes the C99 support in GCC 3.1 and 3.2. Information on <a -href="../c99status.html">C99 support in mainline GCC</a> is also -available. - -See below the table for further notes on some issues. - -<table border="1"> -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> - -<tr><td>restricted character set support via digraphs and - <code><iso646.h></code> (originally specified in AMD1)</td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>wide character library support in - <code><wchar.h></code> and <code><wctype.h></code> - (originally specified in AMD1)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>more precise aliasing rules via effective type</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>restricted pointers</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>variable-length arrays</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>flexible array members</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td><code>static</code> and type qualifiers in parameter array declarators</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>complex (and imaginary) support in <code><complex.h></code></td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>type-generic math macros in <code><tgmath.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>the <code>long long int</code> type and library functions</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>increased minimum translation limits</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>additional floating-point characteristics in <code><float.h></code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>remove implicit <code>int</code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>reliable integer division</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>universal character names (<code>\u</code> and <code>\U</code>)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>extended identifiers</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>hexadecimal floating-point constants and - <code>%a</code> and <code>%A</code> - <code>printf</code>/<code>scanf</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>compound literals</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>designated initializers</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td><code>//</code> comments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>library functions in <code><inttypes.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>extended integer types in <code><stdint.h></code></td> - <td></td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>remove implicit function declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>preprocessor arithmetic done in <code>intmax_t</code>/<code>uintmax_t</code></td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>mixed declarations and code</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new block scopes for selection and iteration statements</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer constant type rules</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>integer promotion rules</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>macros with a variable number of arguments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>the <code>vscanf</code> family of functions - in <code><stdio.h></code> and <code><wchar.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional math library functions in <code><math.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>floating-point environment access in <code><fenv.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>IEC 60559 (also known as IEC 559 or IEEE arithmetic) support</td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>trailing comma allowed in <code>enum</code> declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>%lf</code> conversion specifier allowed in <code>printf</code></td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>inline functions</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>the <code>snprintf</code> family of functions in <code><stdio.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>boolean type in <code><stdbool.h></code></td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>idempotent type qualifiers</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>empty macro arguments</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new struct type compatibility rules (tag compatibility)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional predefined macro names</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>_Pragma</code> preprocessing operator</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>standard pragmas</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>__func__</code> predefined identifier</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>va_copy</code> macro</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional <code>strftime</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>deprecate <code>ungetc</code> at the beginning of a binary file</td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>remove deprecation of aliased array parameters</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>conversion of array to pointer not limited to lvalues</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed constraints on aggregate and union initialization</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed restrictions on portable header names</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>return</code> without expression not permitted - in function that returns a value (and vice versa)</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> -</table> - -<h2>Further notes</h2> - -<ul> - -<li>cpp has no support for multibyte character sets.</li> - -<li>cpp arithmetic is done in <code>HOST_WIDEST_INT</code>, which may not -be the same as the target <code>intmax_t</code> required by C99.</li> - -<li>IEC 60559 is IEEE 754 floating point. This works if and only if -the hardware is perfectly compliant, but GCC does not define -<code>__STDC_IEC_559__</code> or implement the associated standard -pragmas.</li> - -<li>The extra definitions in <code><float.h></code> (of -<code>FLT_EVAL_METHOD</code> and <code>DECIMAL_DIG</code>) are -included in most versions of <code><float.h></code>, but not yet -<code>float-c4x.h</code> or -<code>float-vax.h</code>. Also, some targets such as Solaris use the -system <code><float.h></code> but do not fix it to add these -definitions.</li> - -<li>Compiler support is needed for <code>math_errhandling</code>; see -messages <a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00008.html">1</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00014.html">2</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00015.html">3</a> -on this subject to libc-hacker.</li> - -<li>In some places, <code>-pedantic</code> warnings don't take proper -account of the standard version selected.</li> - -<li>GCC doesn't have <code>wprintf</code>, <code>wscanf</code> and -<code>wcsftime</code> format checking support.</li> - -<li>Complex numbers support may be broken (some problems with -passing/returning complex values on 64-bit targets, and not checked -against the requirements of the C99 standard). However, the -<code>_Complex</code> keyword now works.</li> - -<li>C99 <code>inline</code> functions do not generate an external -definition if declared without <code>extern</code>, but do if declared -with <code>extern</code>, the opposite of GCC's handling of -<code>inline</code> and <code>extern inline</code>. This will -probably require existing glibc headers to be fixincluded.</li> - -<li>The C99 semantics of variable length arrays (VLAs) are not fully -implemented by the existing GCC extension: the concept of variably -modified (VM) types, and the rules for what identifiers can be -declared with VLA or VM types, are not implemented (for example, GCC -allows elements of VM type in a structure with block scope); while the -syntax for arrays to be declared with <code>[*]</code> in parameter -declarations is present, the semantics are not; and in general the -implementation of VLAs has not been checked against C99 requirements.</li> - -<li><code>const</code>-qualified compound literals could share storage -with each other and with string literals, but currently don't.</li> - -<li>The constraints on where structures with flexible array members -may be used (that they, and unions containing them (possibly -recursively), shall not be members of structures or elements of -arrays) are not checked.</li> - -<li>The information provided by <code>static</code> in parameter array -declarators is not used for optimization. It might make sense to use -it in future in conjunction with <a href="../projects/prefetch.html">work -on prefetching</a>.</li> - -<li>The list above differs from that in the C99 standard (as amended -by TC1) as follows: -"LIA compatibility annex" is removed, since it refers to C99's -conformance to another standard rather than something for C -implementations to do. The <code><stdint.h></code> and -<code><inttypes.h></code> entries have been separated, but are a -single entry in C99.</li> - -</ul> - -</body> -</html> Index: gcc-3.3/c99status.html =================================================================== RCS file: gcc-3.3/c99status.html diff -N gcc-3.3/c99status.html --- gcc-3.3/c99status.html 28 Oct 2012 11:05:08 -0000 1.6 +++ /dev/null 1 Jan 1970 00:00:00 -0000 @@ -1,364 +0,0 @@ -<html> - -<head> -<title>Status of C99 features in GCC 3.3</title> -</head> - -<body> -<h1>Status of C99 features in GCC 3.3</h1> - -This table is based on the list in the foreword to the printed -standard ISO/IEC 9899:1999 (E), as amended by ISO/IEC -9899:1999/Cor.1:2001 (E). - -Where "Library Issue" is listed in conjunction with some other -status, this means that some compiler support is needed for the -library support, or desirable in conjunction with it. Note that the -headers required of conforming freestanding implementations (clause 4 -paragraph 6) do not count as library issues. - -This page describes the C99 support in GCC 3.3. Information on <a -href="../c99status.html">C99 support in mainline GCC</a> is also -available. - -See below the table for further notes on some issues. - -<table border="1"> -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> - -<tr><td>restricted character set support via digraphs and - <code><iso646.h></code> (originally specified in AMD1)</td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>wide character library support in - <code><wchar.h></code> and <code><wctype.h></code> - (originally specified in AMD1)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>more precise aliasing rules via effective type</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>restricted pointers</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>variable-length arrays</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>flexible array members</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td><code>static</code> and type qualifiers in parameter array declarators</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>complex (and imaginary) support in <code><complex.h></code></td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>type-generic math macros in <code><tgmath.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>the <code>long long int</code> type and library functions</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>increased minimum translation limits</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>additional floating-point characteristics in <code><float.h></code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>remove implicit <code>int</code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>reliable integer division</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>universal character names (<code>\u</code> and <code>\U</code>)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>extended identifiers</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>hexadecimal floating-point constants and - <code>%a</code> and <code>%A</code> - <code>printf</code>/<code>scanf</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>compound literals</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>designated initializers</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td><code>//</code> comments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>library functions in <code><inttypes.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>extended integer types in <code><stdint.h></code></td> - <td></td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>remove implicit function declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>preprocessor arithmetic done in <code>intmax_t</code>/<code>uintmax_t</code></td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>mixed declarations and code</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new block scopes for selection and iteration statements</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer constant type rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer promotion rules</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>macros with a variable number of arguments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>the <code>vscanf</code> family of functions - in <code><stdio.h></code> and <code><wchar.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional math library functions in <code><math.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>floating-point environment access in <code><fenv.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>IEC 60559 (also known as IEC 559 or IEEE arithmetic) support</td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>trailing comma allowed in <code>enum</code> declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>%lf</code> conversion specifier allowed in <code>printf</code></td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>inline functions</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>the <code>snprintf</code> family of functions in <code><stdio.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>boolean type in <code><stdbool.h></code></td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>idempotent type qualifiers</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>empty macro arguments</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new struct type compatibility rules (tag compatibility)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional predefined macro names</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>_Pragma</code> preprocessing operator</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>standard pragmas</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>__func__</code> predefined identifier</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>va_copy</code> macro</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional <code>strftime</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>deprecate <code>ungetc</code> at the beginning of a binary file</td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>remove deprecation of aliased array parameters</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>conversion of array to pointer not limited to lvalues</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed constraints on aggregate and union initialization</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed restrictions on portable header names</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>return</code> without expression not permitted - in function that returns a value (and vice versa)</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> -</table> - -<h2>Further notes</h2> - -<ul> - -<li>cpp has limited support for multibyte character sets.</li> - -<li>IEC 60559 is IEEE 754 floating point. This works if and only if -the hardware is perfectly compliant, but GCC does not define -<code>__STDC_IEC_559__</code> or implement the associated standard -pragmas.</li> - -<li>Compiler support is needed for <code>math_errhandling</code>; see -messages <a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00008.html">1</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00014.html">2</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00015.html">3</a> -on this subject to libc-hacker.</li> - -<li>In some places, <code>-pedantic</code> warnings don't take proper -account of the standard version selected.</li> - -<li>GCC doesn't have <code>wprintf</code>, <code>wscanf</code> and -<code>wcsftime</code> format checking support.</li> - -<li>Complex numbers support may be broken (some problems with -passing/returning complex values on 64-bit targets, and not checked -against the requirements of the C99 standard). However, the -<code>_Complex</code> keyword now works.</li> - -<li>C99 <code>inline</code> functions do not generate an external -definition if declared without <code>extern</code>, but do if declared -with <code>extern</code>, the opposite of GCC's handling of -<code>inline</code> and <code>extern inline</code>. This will -probably require existing glibc headers to be fixincluded.</li> - -<li>The C99 semantics of variable length arrays (VLAs) are not fully -implemented by the existing GCC extension: the concept of variably -modified (VM) types, and the rules for what identifiers can be -declared with VLA or VM types, are not implemented (for example, GCC -allows elements of VM type in a structure with block scope); while the -syntax for arrays to be declared with <code>[*]</code> in parameter -declarations is present, the semantics are not; and in general the -implementation of VLAs has not been checked against C99 requirements.</li> - -<li><code>const</code>-qualified compound literals could share storage -with each other and with string literals, but currently don't.</li> - -<li>The size of structures with flexible array members is <a -href="http://gcc.gnu.org/ml/gcc/2002-05/msg02844.html">not as -specified in C99</a>; this may be a defect in C99 and other -implementations behave the same way as GCC.</li> - -<li>The information provided by <code>static</code> in parameter array -declarators is not used for optimization. It might make sense to use -it in future in conjunction with <a href="../projects/prefetch.html">work -on prefetching</a>.</li> - -<li>The list above differs from that in the C99 standard (as amended -by TC1) as follows: -"LIA compatibility annex" is removed, since it refers to C99's -conformance to another standard rather than something for C -implementations to do. The <code><stdint.h></code> and -<code><inttypes.h></code> entries have been separated, but are a -single entry in C99.</li> - -</ul> - -</body> -</html> Index: gcc-3.4/c99status.html =================================================================== RCS file: gcc-3.4/c99status.html diff -N gcc-3.4/c99status.html --- gcc-3.4/c99status.html 28 Oct 2012 11:05:08 -0000 1.5 +++ /dev/null 1 Jan 1970 00:00:00 -0000 @@ -1,364 +0,0 @@ -<html> - -<head> -<title>Status of C99 features in GCC 3.4</title> -</head> - -<body> -<h1>Status of C99 features in GCC 3.4</h1> - -This table is based on the list in the foreword to the printed -standard ISO/IEC 9899:1999 (E), as amended by ISO/IEC -9899:1999/Cor.1:2001 (E). - -Where "Library Issue" is listed in conjunction with some other -status, this means that some compiler support is needed for the -library support, or desirable in conjunction with it. Note that the -headers required of conforming freestanding implementations (clause 4 -paragraph 6) do not count as library issues. - -This page describes the C99 support in GCC 3.4. Information on <a -href="../c99status.html">C99 support in mainline GCC</a> is also -available. - -See below the table for further notes on some issues. - -<table border="1"> -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> - -<tr><td>restricted character set support via digraphs and - <code><iso646.h></code> (originally specified in AMD1)</td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>wide character library support in - <code><wchar.h></code> and <code><wctype.h></code> - (originally specified in AMD1)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>more precise aliasing rules via effective type</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>restricted pointers</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>variable-length arrays</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>flexible array members</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td><code>static</code> and type qualifiers in parameter array declarators</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>complex (and imaginary) support in <code><complex.h></code></td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>type-generic math macros in <code><tgmath.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>the <code>long long int</code> type and library functions</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>increased minimum translation limits</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>additional floating-point characteristics in <code><float.h></code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>remove implicit <code>int</code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>reliable integer division</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>universal character names (<code>\u</code> and <code>\U</code>)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>extended identifiers</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>hexadecimal floating-point constants and - <code>%a</code> and <code>%A</code> - <code>printf</code>/<code>scanf</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>compound literals</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>designated initializers</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td><code>//</code> comments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>library functions in <code><inttypes.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>extended integer types in <code><stdint.h></code></td> - <td></td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>remove implicit function declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>preprocessor arithmetic done in <code>intmax_t</code>/<code>uintmax_t</code></td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>mixed declarations and code</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new block scopes for selection and iteration statements</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer constant type rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer promotion rules</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>macros with a variable number of arguments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>the <code>vscanf</code> family of functions - in <code><stdio.h></code> and <code><wchar.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional math library functions in <code><math.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>floating-point environment access in <code><fenv.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>IEC 60559 (also known as IEC 559 or IEEE arithmetic) support</td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>trailing comma allowed in <code>enum</code> declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>%lf</code> conversion specifier allowed in <code>printf</code></td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>inline functions</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>the <code>snprintf</code> family of functions in <code><stdio.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>boolean type in <code><stdbool.h></code></td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>idempotent type qualifiers</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>empty macro arguments</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new struct type compatibility rules (tag compatibility)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional predefined macro names</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>_Pragma</code> preprocessing operator</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>standard pragmas</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>__func__</code> predefined identifier</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>va_copy</code> macro</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional <code>strftime</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>deprecate <code>ungetc</code> at the beginning of a binary file</td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>remove deprecation of aliased array parameters</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>conversion of array to pointer not limited to lvalues</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed constraints on aggregate and union initialization</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed restrictions on portable header names</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>return</code> without expression not permitted - in function that returns a value (and vice versa)</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> -</table> - -<h2>Further notes</h2> - -<ul> - -<li>cpp has limited support for multibyte character sets.</li> - -<li>IEC 60559 is IEEE 754 floating point. This works if and only if -the hardware is perfectly compliant, but GCC does not define -<code>__STDC_IEC_559__</code> or implement the associated standard -pragmas.</li> - -<li>Compiler support is needed for <code>math_errhandling</code>; see -messages <a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00008.html">1</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00014.html">2</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00015.html">3</a> -on this subject to libc-hacker.</li> - -<li>In some places, <code>-pedantic</code> warnings don't take proper -account of the standard version selected.</li> - -<li>GCC doesn't have <code>wprintf</code>, <code>wscanf</code> and -<code>wcsftime</code> format checking support.</li> - -<li>Complex numbers support may be broken (some problems with -passing/returning complex values on 64-bit targets, and not checked -against the requirements of the C99 standard). However, the -<code>_Complex</code> keyword now works.</li> - -<li>C99 <code>inline</code> functions do not generate an external -definition if declared without <code>extern</code>, but do if declared -with <code>extern</code>, the opposite of GCC's handling of -<code>inline</code> and <code>extern inline</code>. This will -probably require existing glibc headers to be fixincluded.</li> - -<li>The C99 semantics of variable length arrays (VLAs) are not fully -implemented by the existing GCC extension: the concept of variably -modified (VM) types, and the rules for what identifiers can be -declared with VLA or VM types, are not implemented (for example, GCC -allows elements of VM type in a structure with block scope); while the -syntax for arrays to be declared with <code>[*]</code> in parameter -declarations is present, the semantics are not; and in general the -implementation of VLAs has not been checked against C99 requirements.</li> - -<li><code>const</code>-qualified compound literals could share storage -with each other and with string literals, but currently don't.</li> - -<li>The size of structures with flexible array members is <a -href="http://gcc.gnu.org/ml/gcc/2002-05/msg02844.html">not as -specified in C99</a>; this may be a defect in C99 and other -implementations behave the same way as GCC.</li> - -<li>The information provided by <code>static</code> in parameter array -declarators is not used for optimization. It might make sense to use -it in future in conjunction with <a href="../projects/prefetch.html">work -on prefetching</a>.</li> - -<li>The list above differs from that in the C99 standard (as amended -by TC1) as follows: -"LIA compatibility annex" is removed, since it refers to C99's -conformance to another standard rather than something for C -implementations to do. The <code><stdint.h></code> and -<code><inttypes.h></code> entries have been separated, but are a -single entry in C99.</li> - -</ul> - -</body> -</html> Index: gcc-4.0/c99status.html =================================================================== RCS file: gcc-4.0/c99status.html diff -N gcc-4.0/c99status.html --- gcc-4.0/c99status.html 28 Oct 2012 11:05:08 -0000 1.3 +++ /dev/null 1 Jan 1970 00:00:00 -0000 @@ -1,359 +0,0 @@ -<html> - -<head> -<title>Status of C99 features in GCC 4.0</title> -</head> - -<body> -<h1>Status of C99 features in GCC 4.0</h1> - -This table is based on the list in the foreword to the printed -standard ISO/IEC 9899:1999 (E), as amended by ISO/IEC -9899:1999/Cor.1:2001 (E) and ISO/IEC 9899:1999/Cor.2:2004 (E). - -Where "Library Issue" is listed in conjunction with some other -status, this means that some compiler support is needed for the -library support, or desirable in conjunction with it. Note that the -headers required of conforming freestanding implementations (clause 4 -paragraph 6) do not count as library issues. - -This page describes the C99 support in GCC 4.0. Information on <a -href="../c99status.html">C99 support in mainline GCC</a> is also -available. - -See below the table for further notes on some issues. - -<table border="1"> -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> - -<tr><td>restricted character set support via digraphs and - <code><iso646.h></code> (originally specified in AMD1)</td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>wide character library support in - <code><wchar.h></code> and <code><wctype.h></code> - (originally specified in AMD1)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>more precise aliasing rules via effective type</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>restricted pointers</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>variable-length arrays</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>flexible array members</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td><code>static</code> and type qualifiers in parameter array declarators</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>complex (and imaginary) support in <code><complex.h></code></td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>type-generic math macros in <code><tgmath.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>the <code>long long int</code> type and library functions</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>increased minimum translation limits</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>additional floating-point characteristics in <code><float.h></code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>remove implicit <code>int</code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>reliable integer division</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>universal character names (<code>\u</code> and <code>\U</code>)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>extended identifiers</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>hexadecimal floating-point constants and - <code>%a</code> and <code>%A</code> - <code>printf</code>/<code>scanf</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>compound literals</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>designated initializers</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td><code>//</code> comments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>library functions in <code><inttypes.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>extended integer types in <code><stdint.h></code></td> - <td></td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>remove implicit function declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>preprocessor arithmetic done in <code>intmax_t</code>/<code>uintmax_t</code></td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>mixed declarations and code</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new block scopes for selection and iteration statements</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer constant type rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer promotion rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>macros with a variable number of arguments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>the <code>vscanf</code> family of functions - in <code><stdio.h></code> and <code><wchar.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional math library functions in <code><math.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>floating-point environment access in <code><fenv.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>IEC 60559 (also known as IEC 559 or IEEE arithmetic) support</td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>trailing comma allowed in <code>enum</code> declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>%lf</code> conversion specifier allowed in <code>printf</code></td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>inline functions</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>the <code>snprintf</code> family of functions in <code><stdio.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>boolean type in <code><stdbool.h></code></td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>idempotent type qualifiers</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>empty macro arguments</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new struct type compatibility rules (tag compatibility)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional predefined macro names</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>_Pragma</code> preprocessing operator</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>standard pragmas</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>__func__</code> predefined identifier</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>va_copy</code> macro</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional <code>strftime</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>deprecate <code>ungetc</code> at the beginning of a binary file</td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>remove deprecation of aliased array parameters</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>conversion of array to pointer not limited to lvalues</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed constraints on aggregate and union initialization</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed restrictions on portable header names</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>return</code> without expression not permitted - in function that returns a value (and vice versa)</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> -</table> - -<h2>Further notes</h2> - -<ul> - -<li>cpp has limited support for multibyte character sets.</li> - -<li>IEC 60559 is IEEE 754 floating point. This works if and only if -the hardware is perfectly compliant, but GCC does not define -<code>__STDC_IEC_559__</code> or implement the associated standard -pragmas.</li> - -<li>Compiler support is needed for <code>math_errhandling</code>; see -messages <a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00008.html">1</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00014.html">2</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00015.html">3</a> -on this subject to libc-hacker.</li> - -<li>In some places, <code>-pedantic</code> warnings don't take proper -account of the standard version selected.</li> - -<li>GCC doesn't have <code>wprintf</code>, <code>wscanf</code> and -<code>wcsftime</code> format checking support.</li> - -<li>Complex numbers support may be broken (some problems with -passing/returning complex values on 64-bit targets, and not checked -against the requirements of the C99 standard). However, the -<code>_Complex</code> keyword now works.</li> - -<li>C99 <code>inline</code> functions do not generate an external -definition if declared without <code>extern</code>, but do if declared -with <code>extern</code>, the opposite of GCC's handling of -<code>inline</code> and <code>extern inline</code>. This will -probably require existing glibc headers to be fixincluded.</li> - -<li>The C99 semantics of variable length arrays (VLAs) are not fully -implemented by the existing GCC extension: the concept of variably -modified (VM) types, and the rules for what identifiers can be -declared with VLA or VM types, are not implemented (for example, GCC -allows elements of VM type in a structure with block scope); while the -syntax for arrays to be declared with <code>[*]</code> in parameter -declarations is present, the semantics are not; and in general the -implementation of VLAs has not been checked against C99 requirements.</li> - -<li><code>const</code>-qualified compound literals could share storage -with each other and with string literals, but currently don't.</li> - -<li>The information provided by <code>static</code> in parameter array -declarators is not used for optimization. It might make sense to use -it in future in conjunction with <a href="../projects/prefetch.html">work -on prefetching</a>.</li> - -<li>The list above differs from that in the C99 standard (as amended -by TC1) as follows: -"LIA compatibility annex" is removed, since it refers to C99's -conformance to another standard rather than something for C -implementations to do. The <code><stdint.h></code> and -<code><inttypes.h></code> entries have been separated, but are a -single entry in C99.</li> - -</ul> - -</body> -</html> Index: gcc-4.1/c99status.html =================================================================== RCS file: gcc-4.1/c99status.html diff -N gcc-4.1/c99status.html --- gcc-4.1/c99status.html 28 Oct 2012 11:05:08 -0000 1.3 +++ /dev/null 1 Jan 1970 00:00:00 -0000 @@ -1,359 +0,0 @@ -<html> - -<head> -<title>Status of C99 features in GCC 4.1</title> -</head> - -<body> -<h1>Status of C99 features in GCC 4.1</h1> - -This table is based on the list in the foreword to the printed -standard ISO/IEC 9899:1999 (E), as amended by ISO/IEC -9899:1999/Cor.1:2001 (E) and ISO/IEC 9899:1999/Cor.2:2004 (E). - -Where "Library Issue" is listed in conjunction with some other -status, this means that some compiler support is needed for the -library support, or desirable in conjunction with it. Note that the -headers required of conforming freestanding implementations (clause 4 -paragraph 6) do not count as library issues. - -This page describes the C99 support in GCC 4.1. Information on <a -href="../c99status.html">C99 support in mainline GCC</a> is also -available. - -See below the table for further notes on some issues. - -<table border="1"> -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> - -<tr><td>restricted character set support via digraphs and - <code><iso646.h></code> (originally specified in AMD1)</td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>wide character library support in - <code><wchar.h></code> and <code><wctype.h></code> - (originally specified in AMD1)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>more precise aliasing rules via effective type</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>restricted pointers</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>variable-length arrays</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>flexible array members</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td><code>static</code> and type qualifiers in parameter array declarators</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>complex (and imaginary) support in <code><complex.h></code></td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>type-generic math macros in <code><tgmath.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>the <code>long long int</code> type and library functions</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>increased minimum translation limits</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>additional floating-point characteristics in <code><float.h></code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>remove implicit <code>int</code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>reliable integer division</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>universal character names (<code>\u</code> and <code>\U</code>)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>extended identifiers</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>hexadecimal floating-point constants and - <code>%a</code> and <code>%A</code> - <code>printf</code>/<code>scanf</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>compound literals</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>designated initializers</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td><code>//</code> comments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>library functions in <code><inttypes.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>extended integer types in <code><stdint.h></code></td> - <td></td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>remove implicit function declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>preprocessor arithmetic done in <code>intmax_t</code>/<code>uintmax_t</code></td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>mixed declarations and code</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new block scopes for selection and iteration statements</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer constant type rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer promotion rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>macros with a variable number of arguments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>the <code>vscanf</code> family of functions - in <code><stdio.h></code> and <code><wchar.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional math library functions in <code><math.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>floating-point environment access in <code><fenv.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>IEC 60559 (also known as IEC 559 or IEEE arithmetic) support</td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>trailing comma allowed in <code>enum</code> declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>%lf</code> conversion specifier allowed in <code>printf</code></td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>inline functions</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>the <code>snprintf</code> family of functions in <code><stdio.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>boolean type in <code><stdbool.h></code></td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>idempotent type qualifiers</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>empty macro arguments</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new struct type compatibility rules (tag compatibility)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional predefined macro names</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>_Pragma</code> preprocessing operator</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>standard pragmas</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>__func__</code> predefined identifier</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>va_copy</code> macro</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional <code>strftime</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>deprecate <code>ungetc</code> at the beginning of a binary file</td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>remove deprecation of aliased array parameters</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>conversion of array to pointer not limited to lvalues</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed constraints on aggregate and union initialization</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed restrictions on portable header names</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>return</code> without expression not permitted - in function that returns a value (and vice versa)</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> -</table> - -<h2>Further notes</h2> - -<ul> - -<li>cpp has limited support for multibyte character sets.</li> - -<li>IEC 60559 is IEEE 754 floating point. This works if and only if -the hardware is perfectly compliant, but GCC does not define -<code>__STDC_IEC_559__</code> or implement the associated standard -pragmas.</li> - -<li>Compiler support is needed for <code>math_errhandling</code>; see -messages <a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00008.html">1</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00014.html">2</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00015.html">3</a> -on this subject to libc-hacker.</li> - -<li>In some places, <code>-pedantic</code> warnings don't take proper -account of the standard version selected.</li> - -<li>GCC doesn't have <code>wprintf</code>, <code>wscanf</code> and -<code>wcsftime</code> format checking support.</li> - -<li>Complex numbers support may be broken (some problems with -passing/returning complex values on 64-bit targets, and not checked -against the requirements of the C99 standard). However, the -<code>_Complex</code> keyword now works.</li> - -<li>C99 <code>inline</code> functions do not generate an external -definition if declared without <code>extern</code>, but do if declared -with <code>extern</code>, the opposite of GCC's handling of -<code>inline</code> and <code>extern inline</code>. This will -probably require existing glibc headers to be fixincluded.</li> - -<li>The C99 semantics of variable length arrays (VLAs) are not fully -implemented by the existing GCC extension: the concept of variably -modified (VM) types, and the rules for what identifiers can be -declared with VLA or VM types, are not implemented (for example, GCC -allows elements of VM type in a structure with block scope); while the -syntax for arrays to be declared with <code>[*]</code> in parameter -declarations is present, the semantics are not; and in general the -implementation of VLAs has not been checked against C99 requirements.</li> - -<li><code>const</code>-qualified compound literals could share storage -with each other and with string literals, but currently don't.</li> - -<li>The information provided by <code>static</code> in parameter array -declarators is not used for optimization. It might make sense to use -it in future in conjunction with <a href="../projects/prefetch.html">work -on prefetching</a>.</li> - -<li>The list above differs from that in the C99 standard (as amended -by TC1) as follows: -"LIA compatibility annex" is removed, since it refers to C99's -conformance to another standard rather than something for C -implementations to do. The <code><stdint.h></code> and -<code><inttypes.h></code> entries have been separated, but are a -single entry in C99.</li> - -</ul> - -</body> -</html> Index: gcc-4.2/c99status.html =================================================================== RCS file: gcc-4.2/c99status.html diff -N gcc-4.2/c99status.html --- gcc-4.2/c99status.html 28 Oct 2012 11:05:08 -0000 1.3 +++ /dev/null 1 Jan 1970 00:00:00 -0000 @@ -1,360 +0,0 @@ -<html> - -<head> -<title>Status of C99 features in GCC 4.2</title> -</head> - -<body> -<h1>Status of C99 features in GCC 4.2</h1> - -This table is based on the list in the foreword to the printed -standard ISO/IEC 9899:1999 (E), as amended by ISO/IEC -9899:1999/Cor.1:2001 (E) and ISO/IEC 9899:1999/Cor.2:2004 (E). - -Where "Library Issue" is listed in conjunction with some other -status, this means that some compiler support is needed for the -library support, or desirable in conjunction with it. Note that the -headers required of conforming freestanding implementations (clause 4 -paragraph 6) do not count as library issues. - -This page describes the C99 support in GCC 4.2. Information on <a -href="../c99status.html">C99 support in mainline GCC</a> is also -available. - -See below the table for further notes on some issues. - -<table border="1"> -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> - -<tr><td>restricted character set support via digraphs and - <code><iso646.h></code> (originally specified in AMD1)</td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>wide character library support in - <code><wchar.h></code> and <code><wctype.h></code> - (originally specified in AMD1)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>more precise aliasing rules via effective type</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>restricted pointers</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>variable-length arrays</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>flexible array members</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td><code>static</code> and type qualifiers in parameter array declarators</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>complex (and imaginary) support in <code><complex.h></code></td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>type-generic math macros in <code><tgmath.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>the <code>long long int</code> type and library functions</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>increased minimum translation limits</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>additional floating-point characteristics in <code><float.h></code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>remove implicit <code>int</code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>reliable integer division</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>universal character names (<code>\u</code> and <code>\U</code>)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>extended identifiers</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>hexadecimal floating-point constants and - <code>%a</code> and <code>%A</code> - <code>printf</code>/<code>scanf</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>compound literals</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>designated initializers</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td><code>//</code> comments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>library functions in <code><inttypes.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>extended integer types in <code><stdint.h></code></td> - <td></td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>remove implicit function declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>preprocessor arithmetic done in <code>intmax_t</code>/<code>uintmax_t</code></td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>mixed declarations and code</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new block scopes for selection and iteration statements</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer constant type rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer promotion rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>macros with a variable number of arguments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>the <code>vscanf</code> family of functions - in <code><stdio.h></code> and <code><wchar.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional math library functions in <code><math.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>floating-point environment access in <code><fenv.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>IEC 60559 (also known as IEC 559 or IEEE arithmetic) support</td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>trailing comma allowed in <code>enum</code> declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>%lf</code> conversion specifier allowed in <code>printf</code></td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>inline functions</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>the <code>snprintf</code> family of functions in <code><stdio.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>boolean type in <code><stdbool.h></code></td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>idempotent type qualifiers</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>empty macro arguments</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new struct type compatibility rules (tag compatibility)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional predefined macro names</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>_Pragma</code> preprocessing operator</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>standard pragmas</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>__func__</code> predefined identifier</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>va_copy</code> macro</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional <code>strftime</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>deprecate <code>ungetc</code> at the beginning of a binary file</td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>remove deprecation of aliased array parameters</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>conversion of array to pointer not limited to lvalues</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed constraints on aggregate and union initialization</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed restrictions on portable header names</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>return</code> without expression not permitted - in function that returns a value (and vice versa)</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> -</table> - -<h2>Further notes</h2> - -<ul> - -<li>cpp has limited support for multibyte character sets.</li> - -<li>IEC 60559 is IEEE 754 floating point. This works if and only if -the hardware is perfectly compliant, but GCC does not define -<code>__STDC_IEC_559__</code> or implement the associated standard -pragmas; nor do some options such as <code>-frounding-math</code> to -enable the pragmas globally work in all cases (for example, required -exceptions may not be generated) and contracting expressions (e.g., -using fused multiply-add) is not restricted to source-language -expressions as required by C99.</li> - -<li>Compiler support is needed for <code>math_errhandling</code>; see -messages <a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00008.html">1</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00014.html">2</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00015.html">3</a> -on this subject to libc-hacker.</li> - -<li>GCC doesn't have <code>wprintf</code>, <code>wscanf</code> and -<code>wcsftime</code> format checking support.</li> - -<li>Complex numbers support does not follow all the requirements of -Annex G and multiplication and division have excess overflows both in -constant folding and at runtime. GCC wrongly promotes both operands -of an operation between complex and real values to a complex type. -Complex numbers support has not been checked in detail against the -requirements of the C99 standard.</li> - -<li>C99 <code>inline</code> functions do not generate an external -definition if declared without <code>extern</code>, but do if declared -with <code>extern</code>, the opposite of GCC's handling of -<code>inline</code> and <code>extern inline</code>. This will -probably require existing glibc headers to be fixincluded.</li> - -<li>Some details of variable length arrays (VLAs) relating to when -size expressions are evaluated and when the memory for VLAs is freed -are not implemented, and other details are not checked against the -requirements of the C99 standard.</li> - -<li><code>const</code>-qualified compound literals could share storage -with each other and with string literals, but currently don't.</li> - -<li>The information provided by <code>static</code> in parameter array -declarators is not used for optimization. It might make sense to use -it in future in conjunction with <a href="../projects/prefetch.html">work -on prefetching</a>.</li> - -<li>Some changes in TC2 may not have been implemented.</li> - -<li>The list above differs from that in the C99 standard (as amended -by TC1) as follows: -"LIA compatibility annex" is removed, since it refers to C99's -conformance to another standard rather than something for C -implementations to do. The <code><stdint.h></code> and -<code><inttypes.h></code> entries have been separated, but are a -single entry in C99.</li> - -</ul> - -</body> -</html> Index: gcc-4.3/c99status.html =================================================================== RCS file: gcc-4.3/c99status.html diff -N gcc-4.3/c99status.html --- gcc-4.3/c99status.html 28 Oct 2012 11:05:08 -0000 1.3 +++ /dev/null 1 Jan 1970 00:00:00 -0000 @@ -1,358 +0,0 @@ -<html> - -<head> -<title>Status of C99 features in GCC 4.3</title> -</head> - -<body> -<h1>Status of C99 features in GCC 4.3</h1> - -This table is based on the list in the foreword to <a -href="http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf">N1256</a> -(ISO/IEC 9899:1999 (E), consolidated with ISO/IEC 9899:1999/Cor.1:2001 -(E), ISO/IEC 9899:1999/Cor.2:2004 (E) and ISO/IEC 9899:1999/Cor.3:2007 -(E)). - -Where "Library Issue" is listed in conjunction with some other -status, this means that some compiler support is needed for the -library support, or desirable in conjunction with it. Note that the -headers required of conforming freestanding implementations (clause 4 -paragraph 6) do not count as library issues. - -This page describes the C99 support in GCC 4.3. Information on <a -href="../c99status.html">C99 support in mainline GCC</a> is also -available. - -See below the table for further notes on some issues. - -<table border="1"> -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> - -<tr><td>restricted character set support via digraphs and - <code><iso646.h></code> (originally specified in AMD1)</td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>wide character library support in - <code><wchar.h></code> and <code><wctype.h></code> - (originally specified in AMD1)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>more precise aliasing rules via effective type</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>restricted pointers</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>variable-length arrays</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>flexible array members</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td><code>static</code> and type qualifiers in parameter array declarators</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>complex (and imaginary) support in <code><complex.h></code></td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>type-generic math macros in <code><tgmath.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>the <code>long long int</code> type and library functions</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>increased minimum translation limits</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>additional floating-point characteristics in <code><float.h></code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>remove implicit <code>int</code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>reliable integer division</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>universal character names (<code>\u</code> and <code>\U</code>)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>extended identifiers</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>hexadecimal floating-point constants and - <code>%a</code> and <code>%A</code> - <code>printf</code>/<code>scanf</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>compound literals</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>designated initializers</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td><code>//</code> comments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>library functions in <code><inttypes.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>extended integer types in <code><stdint.h></code></td> - <td></td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>remove implicit function declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>preprocessor arithmetic done in <code>intmax_t</code>/<code>uintmax_t</code></td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>mixed declarations and code</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new block scopes for selection and iteration statements</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer constant type rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer promotion rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>macros with a variable number of arguments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>the <code>vscanf</code> family of functions - in <code><stdio.h></code> and <code><wchar.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional math library functions in <code><math.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>treatment of error conditions by math library functions (<code>math_errhandling</code>)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>floating-point environment access in <code><fenv.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>IEC 60559 (also known as IEC 559 or IEEE arithmetic) support</td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>trailing comma allowed in <code>enum</code> declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>%lf</code> conversion specifier allowed in <code>printf</code></td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>inline functions</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>the <code>snprintf</code> family of functions in <code><stdio.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>boolean type in <code><stdbool.h></code></td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>idempotent type qualifiers</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>empty macro arguments</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new struct type compatibility rules (tag compatibility)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional predefined macro names</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>_Pragma</code> preprocessing operator</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>standard pragmas</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>__func__</code> predefined identifier</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>va_copy</code> macro</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional <code>strftime</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>deprecate <code>ungetc</code> at the beginning of a binary file</td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>remove deprecation of aliased array parameters</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>conversion of array to pointer not limited to lvalues</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed constraints on aggregate and union initialization</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed restrictions on portable header names</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>return</code> without expression not permitted - in function that returns a value (and vice versa)</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> -</table> - -<h2>Further notes</h2> - -<ul> - -<li>cpp has limited support for multibyte character sets.</li> - -<li>IEC 60559 is IEEE 754 floating point. This works if and only if -the hardware is perfectly compliant, but GCC does not define -<code>__STDC_IEC_559__</code> or implement the associated standard -pragmas; nor do some options such as <code>-frounding-math</code> to -enable the pragmas globally work in all cases (for example, required -exceptions may not be generated) and contracting expressions (e.g., -using fused multiply-add) is not restricted to source-language -expressions as required by C99.</li> - -<li>Compiler support is needed for <code>math_errhandling</code>; see -messages <a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00008.html">1</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00014.html">2</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00015.html">3</a> -on this subject to libc-hacker.</li> - -<li>GCC doesn't have <code>wprintf</code>, <code>wscanf</code> and -<code>wcsftime</code> format checking support.</li> - -<li>Complex numbers support does not follow all the requirements of -Annex G and multiplication and division have excess overflows both in -constant folding and at runtime. GCC wrongly promotes both operands -of an operation between complex and real values to a complex type. -Complex numbers support has not been checked in detail against the -requirements of the C99 standard.</li> - -<li>Some details of variable length arrays (VLAs) relating to when -size expressions are evaluated and when the memory for VLAs is freed -are not implemented, and other details are not checked against the -requirements of the C99 standard.</li> - -<li><code>const</code>-qualified compound literals could share storage -with each other and with string literals, but currently don't.</li> - -<li>The information provided by <code>static</code> in parameter array -declarators is not used for optimization. It might make sense to use -it in future in conjunction with <a href="../projects/prefetch.html">work -on prefetching</a>.</li> - -<li>The list above differs from that in N1256 as follows: -"LIA compatibility annex" is removed, since it refers to C99's -conformance to another standard rather than something for C -implementations to do. The <code><stdint.h></code> and -<code><inttypes.h></code> entries have been separated, but are a -single entry in C99.</li> - -</ul> - -</body> -</html> Index: gcc-4.4/c99status.html =================================================================== RCS file: gcc-4.4/c99status.html diff -N gcc-4.4/c99status.html --- gcc-4.4/c99status.html 28 Oct 2012 11:05:08 -0000 1.2 +++ /dev/null 1 Jan 1970 00:00:00 -0000 @@ -1,358 +0,0 @@ -<html> - -<head> -<title>Status of C99 features in GCC 4.4</title> -</head> - -<body> -<h1>Status of C99 features in GCC 4.4</h1> - -This table is based on the list in the foreword to <a -href="http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf">N1256</a> -(ISO/IEC 9899:1999 (E), consolidated with ISO/IEC 9899:1999/Cor.1:2001 -(E), ISO/IEC 9899:1999/Cor.2:2004 (E) and ISO/IEC 9899:1999/Cor.3:2007 -(E)). - -Where "Library Issue" is listed in conjunction with some other -status, this means that some compiler support is needed for the -library support, or desirable in conjunction with it. Note that the -headers required of conforming freestanding implementations (clause 4 -paragraph 6) do not count as library issues. - -This page describes the C99 support in GCC 4.4. Information on <a -href="../c99status.html">C99 support in mainline GCC</a> is also -available. - -See below the table for further notes on some issues. - -<table border="1"> -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> - -<tr><td>restricted character set support via digraphs and - <code><iso646.h></code> (originally specified in AMD1)</td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>wide character library support in - <code><wchar.h></code> and <code><wctype.h></code> - (originally specified in AMD1)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>more precise aliasing rules via effective type</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>restricted pointers</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>variable-length arrays</td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>flexible array members</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td><code>static</code> and type qualifiers in parameter array declarators</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>complex (and imaginary) support in <code><complex.h></code></td> - <td></td><td></td><td>Broken</td> - <td></td> -</tr> - -<tr><td>type-generic math macros in <code><tgmath.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>the <code>long long int</code> type and library functions</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>increased minimum translation limits</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>additional floating-point characteristics in <code><float.h></code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>remove implicit <code>int</code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>reliable integer division</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>universal character names (<code>\u</code> and <code>\U</code>)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>extended identifiers</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>hexadecimal floating-point constants and - <code>%a</code> and <code>%A</code> - <code>printf</code>/<code>scanf</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>compound literals</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>designated initializers</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td><code>//</code> comments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>library functions in <code><inttypes.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>extended integer types in <code><stdint.h></code></td> - <td></td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>remove implicit function declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>preprocessor arithmetic done in <code>intmax_t</code>/<code>uintmax_t</code></td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>mixed declarations and code</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new block scopes for selection and iteration statements</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer constant type rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer promotion rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>macros with a variable number of arguments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>the <code>vscanf</code> family of functions - in <code><stdio.h></code> and <code><wchar.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional math library functions in <code><math.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>treatment of error conditions by math library functions (<code>math_errhandling</code>)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>floating-point environment access in <code><fenv.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>IEC 60559 (also known as IEC 559 or IEEE arithmetic) support</td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>trailing comma allowed in <code>enum</code> declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>%lf</code> conversion specifier allowed in <code>printf</code></td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>inline functions</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>the <code>snprintf</code> family of functions in <code><stdio.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>boolean type in <code><stdbool.h></code></td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>idempotent type qualifiers</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>empty macro arguments</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new struct type compatibility rules (tag compatibility)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional predefined macro names</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>_Pragma</code> preprocessing operator</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>standard pragmas</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>__func__</code> predefined identifier</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>va_copy</code> macro</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional <code>strftime</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>deprecate <code>ungetc</code> at the beginning of a binary file</td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>remove deprecation of aliased array parameters</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>conversion of array to pointer not limited to lvalues</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed constraints on aggregate and union initialization</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed restrictions on portable header names</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>return</code> without expression not permitted - in function that returns a value (and vice versa)</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> -</table> - -<h2>Further notes</h2> - -<ul> - -<li>cpp has limited support for multibyte character sets.</li> - -<li>IEC 60559 is IEEE 754 floating point. This works if and only if -the hardware is perfectly compliant, but GCC does not define -<code>__STDC_IEC_559__</code> or implement the associated standard -pragmas; nor do some options such as <code>-frounding-math</code> to -enable the pragmas globally work in all cases (for example, required -exceptions may not be generated) and contracting expressions (e.g., -using fused multiply-add) is not restricted to source-language -expressions as required by C99.</li> - -<li>Compiler support is needed for <code>math_errhandling</code>; see -messages <a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00008.html">1</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00014.html">2</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00015.html">3</a> -on this subject to libc-hacker.</li> - -<li>GCC doesn't have <code>wprintf</code>, <code>wscanf</code> and -<code>wcsftime</code> format checking support.</li> - -<li>Complex numbers support does not follow all the requirements of -Annex G and multiplication and division have excess overflows both in -constant folding and at runtime. GCC wrongly promotes both operands -of an operation between complex and real values to a complex type. -Complex numbers support has not been checked in detail against the -requirements of the C99 standard.</li> - -<li>Some details of variable length arrays (VLAs) relating to when -size expressions are evaluated and when the memory for VLAs is freed -are not implemented, and other details are not checked against the -requirements of the C99 standard.</li> - -<li><code>const</code>-qualified compound literals could share storage -with each other and with string literals, but currently don't.</li> - -<li>The information provided by <code>static</code> in parameter array -declarators is not used for optimization. It might make sense to use -it in future in conjunction with <a href="../projects/prefetch.html">work -on prefetching</a>.</li> - -<li>The list above differs from that in N1256 as follows: -"LIA compatibility annex" is removed, since it refers to C99's -conformance to another standard rather than something for C -implementations to do. The <code><stdint.h></code> and -<code><inttypes.h></code> entries have been separated, but are a -single entry in C99.</li> - -</ul> - -</body> -</html> Index: gcc-4.5/c99status.html =================================================================== RCS file: gcc-4.5/c99status.html diff -N gcc-4.5/c99status.html --- gcc-4.5/c99status.html 28 Oct 2012 11:05:08 -0000 1.3 +++ /dev/null 1 Jan 1970 00:00:00 -0000 @@ -1,372 +0,0 @@ -<html> - -<head> -<title>Status of C99 features in GCC 4.5</title> -</head> - -<body> -<h1>Status of C99 features in GCC 4.5</h1> - -This table is based on the list in the foreword to <a -href="http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf">N1256</a> -(ISO/IEC 9899:1999 (E), consolidated with ISO/IEC 9899:1999/Cor.1:2001 -(E), ISO/IEC 9899:1999/Cor.2:2004 (E) and ISO/IEC 9899:1999/Cor.3:2007 -(E)). - -Where "Library Issue" is listed in conjunction with some other -status, this means that some compiler support is needed for the -library support, or desirable in conjunction with it. Note that the -headers required of conforming freestanding implementations (clause 4 -paragraph 6) do not count as library issues. - -This page describes the C99 support in GCC 4.5. Information on <a -href="../c99status.html">C99 support in mainline GCC</a> is also -available. - -See below the table for further notes on some issues. - -<table border="1"> -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> - -<tr><td>restricted character set support via digraphs and - <code><iso646.h></code> (originally specified in AMD1)</td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>wide character library support in - <code><wchar.h></code> and <code><wctype.h></code> - (originally specified in AMD1)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>more precise aliasing rules via effective type</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>restricted pointers</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>variable-length arrays</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>flexible array members</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td><code>static</code> and type qualifiers in parameter array declarators</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>complex (and imaginary) support in <code><complex.h></code></td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>type-generic math macros in <code><tgmath.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>the <code>long long int</code> type and library functions</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>increased minimum translation limits</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>additional floating-point characteristics in <code><float.h></code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>remove implicit <code>int</code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>reliable integer division</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>universal character names (<code>\u</code> and <code>\U</code>)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>extended identifiers</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>hexadecimal floating-point constants and - <code>%a</code> and <code>%A</code> - <code>printf</code>/<code>scanf</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>compound literals</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>designated initializers</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td><code>//</code> comments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>library functions in <code><inttypes.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>extended integer types in <code><stdint.h></code></td> - <td></td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>remove implicit function declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>preprocessor arithmetic done in <code>intmax_t</code>/<code>uintmax_t</code></td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>mixed declarations and code</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new block scopes for selection and iteration statements</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer constant type rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer promotion rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>macros with a variable number of arguments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>the <code>vscanf</code> family of functions - in <code><stdio.h></code> and <code><wchar.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional math library functions in <code><math.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>treatment of error conditions by math library functions (<code>math_errhandling</code>)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>floating-point environment access in <code><fenv.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>IEC 60559 (also known as IEC 559 or IEEE arithmetic) support</td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>trailing comma allowed in <code>enum</code> declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>%lf</code> conversion specifier allowed in <code>printf</code></td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>inline functions</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>the <code>snprintf</code> family of functions in <code><stdio.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>boolean type in <code><stdbool.h></code></td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>idempotent type qualifiers</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>empty macro arguments</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new struct type compatibility rules (tag compatibility)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional predefined macro names</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>_Pragma</code> preprocessing operator</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>standard pragmas</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>__func__</code> predefined identifier</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>va_copy</code> macro</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional <code>strftime</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>deprecate <code>ungetc</code> at the beginning of a binary file</td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>remove deprecation of aliased array parameters</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>conversion of array to pointer not limited to lvalues</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed constraints on aggregate and union initialization</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed restrictions on portable header names</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>return</code> without expression not permitted - in function that returns a value (and vice versa)</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> -</table> - -<h2>Further notes</h2> - -<ul> - -<li>cpp has limited support for multibyte character sets.</li> - -<li>IEC 60559 is IEEE 754 floating point. This works if and only if -the hardware is perfectly compliant, but GCC does not define -<code>__STDC_IEC_559__</code> or implement the associated standard -pragmas; nor do some options such as <code>-frounding-math</code> to -enable the pragmas globally work in all cases (for example, required -exceptions may not be generated) and contracting expressions (e.g., -using fused multiply-add) is not restricted to source-language -expressions as required by C99.</li> - -<li>Compiler support is needed for thorough support of <code>math_errhandling</code>; see -messages <a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00008.html">1</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00014.html">2</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00015.html">3</a> -on this subject to libc-hacker. The compiler needs to mark its output -from compilations using <code>-fno-trapping-math</code> -or <code>-fno-math-errno</code>, possibly using -the <code>.gnu_attribute</code> mechanism, to indicate that built-in -function optimizations may have been applied that mean that not all -calls report error status in a particular way; the static linker -needs to put this information in executables and shared libraries and -the C library needs to use it to set <code>math_errhandling</code> at -startup to a conservatively correct value based on the information -from the compiler. There is currently some limited GNU C Library -support that only conforms as long as the above options are not used -anywhere in the program.</li> - -<li>GCC doesn't have <code>wprintf</code>, <code>wscanf</code> and -<code>wcsftime</code> format checking support.</li> - -<li>GCC does not support the Annex G imaginary types and complex -multiplication and division have excess overflows at runtime (although -not beyond those permitted by C99).</li> - -<li><code><stdint.h></code> is provided by GCC, or fixed where -the system headers provide a nonconforming version, on some but not -yet all systems. On systems where types in this header have been -defined as <code>char</code>, GCC retains this definition although it -is not permitted by C99.</li> - -<li>Some of the C99 predefined macros represent properties of the -compiler and library together and so defining them for the whole -translation unit requires cooperation with the library; -a <a href="http://sourceware.org/ml/libc-alpha/2009-04/msg00005.html">GNU -C Library patch</a> for this is pending review.</li> - -<li><code>const</code>-qualified compound literals could share storage -with each other and with string literals, but currently don't.</li> - -<li>The information provided by <code>static</code> in parameter array -declarators is not used for optimization. It might make sense to use -it in future in conjunction with <a href="../projects/prefetch.html">work -on prefetching</a>.</li> - -<li>The list above differs from that in N1256 as follows: -"LIA compatibility annex" is removed, since it refers to C99's -conformance to another standard rather than something for C -implementations to do. The <code><stdint.h></code> and -<code><inttypes.h></code> entries have been separated, but are a -single entry in C99.</li> - -</ul> - -</body> -</html> Index: gcc-4.6/c99status.html =================================================================== RCS file: gcc-4.6/c99status.html diff -N gcc-4.6/c99status.html --- gcc-4.6/c99status.html 28 Oct 2012 11:05:08 -0000 1.2 +++ /dev/null 1 Jan 1970 00:00:00 -0000 @@ -1,372 +0,0 @@ -<html> - -<head> -<title>Status of C99 features in GCC 4.6</title> -</head> - -<body> -<h1>Status of C99 features in GCC 4.6</h1> - -This table is based on the list in the foreword to <a -href="http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf">N1256</a> -(ISO/IEC 9899:1999 (E), consolidated with ISO/IEC 9899:1999/Cor.1:2001 -(E), ISO/IEC 9899:1999/Cor.2:2004 (E) and ISO/IEC 9899:1999/Cor.3:2007 -(E)). - -Where "Library Issue" is listed in conjunction with some other -status, this means that some compiler support is needed for the -library support, or desirable in conjunction with it. Note that the -headers required of conforming freestanding implementations (clause 4 -paragraph 6) do not count as library issues. - -This page describes the C99 support in GCC 4.6. Information on <a -href="../c99status.html">C99 support in mainline GCC</a> is also -available. - -See below the table for further notes on some issues. - -<table border="1"> -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> - -<tr><td>restricted character set support via digraphs and - <code><iso646.h></code> (originally specified in AMD1)</td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>wide character library support in - <code><wchar.h></code> and <code><wctype.h></code> - (originally specified in AMD1)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>more precise aliasing rules via effective type</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>restricted pointers</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>variable-length arrays</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>flexible array members</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td><code>static</code> and type qualifiers in parameter array declarators</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>complex (and imaginary) support in <code><complex.h></code></td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>type-generic math macros in <code><tgmath.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>the <code>long long int</code> type and library functions</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>increased minimum translation limits</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>additional floating-point characteristics in <code><float.h></code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>remove implicit <code>int</code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>reliable integer division</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>universal character names (<code>\u</code> and <code>\U</code>)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>extended identifiers</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>hexadecimal floating-point constants and - <code>%a</code> and <code>%A</code> - <code>printf</code>/<code>scanf</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>compound literals</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>designated initializers</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td><code>//</code> comments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>library functions in <code><inttypes.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>extended integer types in <code><stdint.h></code></td> - <td></td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>remove implicit function declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>preprocessor arithmetic done in <code>intmax_t</code>/<code>uintmax_t</code></td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>mixed declarations and code</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new block scopes for selection and iteration statements</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer constant type rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer promotion rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>macros with a variable number of arguments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>the <code>vscanf</code> family of functions - in <code><stdio.h></code> and <code><wchar.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional math library functions in <code><math.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>treatment of error conditions by math library functions (<code>math_errhandling</code>)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>floating-point environment access in <code><fenv.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>IEC 60559 (also known as IEC 559 or IEEE arithmetic) support</td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>trailing comma allowed in <code>enum</code> declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>%lf</code> conversion specifier allowed in <code>printf</code></td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>inline functions</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>the <code>snprintf</code> family of functions in <code><stdio.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>boolean type in <code><stdbool.h></code></td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>idempotent type qualifiers</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>empty macro arguments</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new struct type compatibility rules (tag compatibility)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional predefined macro names</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>_Pragma</code> preprocessing operator</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>standard pragmas</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>__func__</code> predefined identifier</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>va_copy</code> macro</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional <code>strftime</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>deprecate <code>ungetc</code> at the beginning of a binary file</td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>remove deprecation of aliased array parameters</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>conversion of array to pointer not limited to lvalues</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed constraints on aggregate and union initialization</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed restrictions on portable header names</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>return</code> without expression not permitted - in function that returns a value (and vice versa)</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> -</table> - -<h2>Further notes</h2> - -<ul> - -<li>cpp has limited support for multibyte character sets.</li> - -<li>IEC 60559 is IEEE 754 floating point. This works if and only if -the hardware is perfectly compliant, but GCC does not define -<code>__STDC_IEC_559__</code> or implement the associated standard -pragmas; nor do some options such as <code>-frounding-math</code> to -enable the pragmas globally work in all cases (for example, required -exceptions may not be generated) and contracting expressions (e.g., -using fused multiply-add) is not restricted to source-language -expressions as required by C99.</li> - -<li>Compiler support is needed for thorough support of <code>math_errhandling</code>; see -messages <a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00008.html">1</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00014.html">2</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00015.html">3</a> -on this subject to libc-hacker. The compiler needs to mark its output -from compilations using <code>-fno-trapping-math</code> -or <code>-fno-math-errno</code>, possibly using -the <code>.gnu_attribute</code> mechanism, to indicate that built-in -function optimizations may have been applied that mean that not all -calls report error status in a particular way; the static linker -needs to put this information in executables and shared libraries and -the C library needs to use it to set <code>math_errhandling</code> at -startup to a conservatively correct value based on the information -from the compiler. There is currently some limited GNU C Library -support that only conforms as long as the above options are not used -anywhere in the program.</li> - -<li>GCC doesn't have <code>wprintf</code>, <code>wscanf</code> and -<code>wcsftime</code> format checking support.</li> - -<li>GCC does not support the Annex G imaginary types and complex -multiplication and division have excess overflows at runtime (although -not beyond those permitted by C99).</li> - -<li><code><stdint.h></code> is provided by GCC, or fixed where -the system headers provide a nonconforming version, on some but not -yet all systems. On systems where types in this header have been -defined as <code>char</code>, GCC retains this definition although it -is not permitted by C99.</li> - -<li>Some of the C99 predefined macros represent properties of the -compiler and library together and so defining them for the whole -translation unit requires cooperation with the library; -a <a href="http://sourceware.org/ml/libc-alpha/2009-04/msg00005.html">GNU -C Library patch</a> for this is pending review.</li> - -<li><code>const</code>-qualified compound literals could share storage -with each other and with string literals, but currently don't.</li> - -<li>The information provided by <code>static</code> in parameter array -declarators is not used for optimization. It might make sense to use -it in future in conjunction with <a href="../projects/prefetch.html">work -on prefetching</a>.</li> - -<li>The list above differs from that in N1256 as follows: -"LIA compatibility annex" is removed, since it refers to C99's -conformance to another standard rather than something for C -implementations to do. The <code><stdint.h></code> and -<code><inttypes.h></code> entries have been separated, but are a -single entry in C99.</li> - -</ul> - -</body> -</html> Index: gcc-4.7/c99status.html =================================================================== RCS file: gcc-4.7/c99status.html diff -N gcc-4.7/c99status.html --- gcc-4.7/c99status.html 28 Oct 2012 11:05:08 -0000 1.2 +++ /dev/null 1 Jan 1970 00:00:00 -0000 @@ -1,372 +0,0 @@ -<html> - -<head> -<title>Status of C99 features in GCC 4.7</title> -</head> - -<body> -<h1>Status of C99 features in GCC 4.7</h1> - -This table is based on the list in the foreword to <a -href="http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf">N1256</a> -(ISO/IEC 9899:1999 (E), consolidated with ISO/IEC 9899:1999/Cor.1:2001 -(E), ISO/IEC 9899:1999/Cor.2:2004 (E) and ISO/IEC 9899:1999/Cor.3:2007 -(E)). - -Where "Library Issue" is listed in conjunction with some other -status, this means that some compiler support is needed for the -library support, or desirable in conjunction with it. Note that the -headers required of conforming freestanding implementations (clause 4 -paragraph 6) do not count as library issues. - -This page describes the C99 support in GCC 4.7. Information on <a -href="../c99status.html">C99 support in mainline GCC</a> is also -available. - -See below the table for further notes on some issues. - -<table border="1"> -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> - -<tr><td>restricted character set support via digraphs and - <code><iso646.h></code> (originally specified in AMD1)</td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>wide character library support in - <code><wchar.h></code> and <code><wctype.h></code> - (originally specified in AMD1)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>more precise aliasing rules via effective type</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>restricted pointers</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>variable-length arrays</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>flexible array members</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td><code>static</code> and type qualifiers in parameter array declarators</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>complex (and imaginary) support in <code><complex.h></code></td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>type-generic math macros in <code><tgmath.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>the <code>long long int</code> type and library functions</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>increased minimum translation limits</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>additional floating-point characteristics in <code><float.h></code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>remove implicit <code>int</code></td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>reliable integer division</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>universal character names (<code>\u</code> and <code>\U</code>)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>extended identifiers</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td>hexadecimal floating-point constants and - <code>%a</code> and <code>%A</code> - <code>printf</code>/<code>scanf</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>compound literals</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>designated initializers</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td><code>//</code> comments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>library functions in <code><inttypes.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>extended integer types in <code><stdint.h></code></td> - <td></td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>remove implicit function declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>preprocessor arithmetic done in <code>intmax_t</code>/<code>uintmax_t</code></td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>mixed declarations and code</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new block scopes for selection and iteration statements</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer constant type rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>integer promotion rules</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>macros with a variable number of arguments</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>the <code>vscanf</code> family of functions - in <code><stdio.h></code> and <code><wchar.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional math library functions in <code><math.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>treatment of error conditions by math library functions (<code>math_errhandling</code>)</td> - <td>Library Issue</td> - <td></td><td></td><td>Missing</td> -</tr> - -<tr><td>floating-point environment access in <code><fenv.h></code></td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>IEC 60559 (also known as IEC 559 or IEEE arithmetic) support</td> - <td></td><td></td><td>Broken</td><td></td> -</tr> - -<tr><td>trailing comma allowed in <code>enum</code> declaration</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>%lf</code> conversion specifier allowed in <code>printf</code></td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>inline functions</td> - <td></td><td>Done</td><td></td> - <td></td> -</tr> - -<tr><td>the <code>snprintf</code> family of functions in <code><stdio.h></code></td> - <td>Library Issue</td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>boolean type in <code><stdbool.h></code></td> - <td></td> - <td>Done</td><td></td><td></td> -</tr> - -<tr><td>idempotent type qualifiers</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>empty macro arguments</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>new struct type compatibility rules (tag compatibility)</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional predefined macro names</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>_Pragma</code> preprocessing operator</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>standard pragmas</td> - <td></td><td></td><td></td><td>Missing</td> -</tr> - -<tr><td><code>__func__</code> predefined identifier</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>va_copy</code> macro</td> - <td></td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>additional <code>strftime</code> conversion specifiers</td> - <td>Library Issue</td><td>Done</td><td></td><td></td> -</tr> - -<tr><td>deprecate <code>ungetc</code> at the beginning of a binary file</td> - <td>Library Issue</td> - <td></td><td></td><td></td> -</tr> - -<tr><td>remove deprecation of aliased array parameters</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>conversion of array to pointer not limited to lvalues</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed constraints on aggregate and union initialization</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td>relaxed restrictions on portable header names</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><td><code>return</code> without expression not permitted - in function that returns a value (and vice versa)</td> - <td></td><td>Done</td> - <td></td><td></td> -</tr> - -<tr><th>Feature</th> - <th>Library Issue</th> - <th>Done</th> - <th>Broken</th> - <th>Missing</th> -</tr> -</table> - -<h2>Further notes</h2> - -<ul> - -<li>cpp has limited support for multibyte character sets.</li> - -<li>IEC 60559 is IEEE 754 floating point. This works if and only if -the hardware is perfectly compliant, but GCC does not define -<code>__STDC_IEC_559__</code> or implement the associated standard -pragmas; nor do some options such as <code>-frounding-math</code> to -enable the pragmas globally work in all cases (for example, required -exceptions may not be generated) and contracting expressions (e.g., -using fused multiply-add) is not restricted to source-language -expressions as required by C99.</li> - -<li>Compiler support is needed for thorough support of <code>math_errhandling</code>; see -messages <a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00008.html">1</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00014.html">2</a>, -<a -href="http://sourceware.org/ml/libc-hacker/2000-06/msg00015.html">3</a> -on this subject to libc-hacker. The compiler needs to mark its output -from compilations using <code>-fno-trapping-math</code> -or <code>-fno-math-errno</code>, possibly using -the <code>.gnu_attribute</code> mechanism, to indicate that built-in -function optimizations may have been applied that mean that not all -calls report error status in a particular way; the static linker -needs to put this information in executables and shared libraries and -the C library needs to use it to set <code>math_errhandling</code> at -startup to a conservatively correct value based on the information -from the compiler. There is currently some limited GNU C Library -support that only conforms as long as the above options are not used -anywhere in the program.</li> - -<li>GCC doesn't have <code>wprintf</code>, <code>wscanf</code> and -<code>wcsftime</code> format checking support.</li> - -<li>GCC does not support the Annex G imaginary types and complex -multiplication and division have excess overflows at runtime (although -not beyond those permitted by C99).</li> - -<li><code><stdint.h></code> is provided by GCC, or fixed where -the system headers provide a nonconforming version, on some but not -yet all systems. On systems where types in this header have been -defined as <code>char</code>, GCC retains this definition although it -is not permitted by C99.</li> - -<li>Some of the C99 predefined macros represent properties of the -compiler and library together and so defining them for the whole -translation unit requires cooperation with the library; -a <a href="http://sourceware.org/ml/libc-alpha/2009-04/msg00005.html">GNU -C Library patch</a> for this is pending review.</li> - -<li><code>const</code>-qualified compound literals could share storage -with each other and with string literals, but currently don't.</li> - -<li>The information provided by <code>static</code> in parameter array -declarators is not used for optimization. It might make sense to use -it in future in conjunction with <a href="../projects/prefetch.html">work -on prefetching</a>.</li> - -<li>The list above differs from that in N1256 as follows: -"LIA compatibility annex" is removed, since it refers to C99's -conformance to another standard rather than something for C -implementations to do. The <code><stdint.h></code> and -<code><inttypes.h></code> entries have been separated, but are a -single entry in C99.</li> - -</ul> - -</body> -</html>

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