[wwwdocs] Update Fortran secrion in 4.8/changes.html

Message ID 503331CC.9010906@net-b.de
State New
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Commit Message

Tobias Burnus Aug. 21, 2012, 6:59 a.m.
Gerald Pfeifer wrote:
> I went ahead and made some smaller changes, patch below.


> I noticed you are using <q>...</q>, as in <q><code>e</code></q>,
> which we usually don't.  Why that?

My impression was that a one-letter <code> didn't stand out enough and 
looked rather odd; if you think it improves consistency or readability, 
feel free to change it.

  * * *

I intent to commit the attached patch to document two new warning flags, 
which were recently added. (Suggested in ISO/IEC Technical Report 24772 
"Guidance for Avoiding Vulnerabilities through Language Selection and Use".)



Index: changes.html
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.8/changes.html,v
retrieving revision 1.17
diff -u -r1.17 changes.html
--- changes.html	20 Aug 2012 12:23:39 -0000	1.17
+++ changes.html	21 Aug 2012 06:56:55 -0000
@@ -92,6 +92,21 @@ 
     (re)allocation in hot loops. (For arrays, replacing <q><code>var=</code></q>
     by <q><code>var(:)=</code></q> disables the automatic reallocation.)</li>
+    <li>The <a
+    href="http://gcc.gnu.org/onlinedocs/gfortran/Error-and-Warning-Options.html">
+    <code>-Wcompare-reals</code></a> flag has been added. When this flag is set,
+    warnings are issued when comparing <code>REAL</code> or
+    <code>COMPLEX</code> types for equality and inequality; consider replacing
+    <code>a == b</code> by <code>abs(a&minus;b) &lt; eps</code> with a suitable
+    <code>eps</code>. The -Wcompare-reals flag is enabled by
+    <code>-Wall</code>.</li>
+    <li>The <a
+    href="http://gcc.gnu.org/onlinedocs/gfortran/Error-and-Warning-Options.html">
+    <code>-Wtarget-lifetime</code></a> flag has been added (enabled with
+    <code>-Wall</code>), which warns if the pointer in a pointer assignment
+    might outlive its target.</li>
     <li><p>Reading floating point numbers which use <q><code>q</code></q> for
     the exponential (such as <code>4.0q0</code>) is now supported as vendor
     extension for better compatibility with old data files. It is strongly