commit 5a57e261bcfbb7691901bdf219ba114b449b690e
Author: Martin Sebor <msebor@redhat.com>
Date: Tue Feb 9 17:40:01 2021 -0700
Move -Wtsan under New Warnings. Add more links to the user manual.
@@ -174,7 +174,8 @@ a work-in-progress.</p>
<ul>
<li>New attributes:
<ul>
- <li>The <code>no_stack_protector</code> attribute has been added to mark functions which should not be instrumented
+ <li>The <a href="https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-no_005fstack_005fprotector-function-attribute"><code>no_stack_protector</code></a>
+ attribute has been added to mark functions which should not be instrumented
with stack protection (<code>-fstack-protector</code>).</li>
<li>The existing
<a href="https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-malloc-function-attribute"><code>malloc</code></a>
@@ -205,6 +206,10 @@ a work-in-progress.</p>
GCC releases most instances of his warning are diagnosed by
<code>-Wstringop-overflow</code>.
</li>
+ <li><a href="https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wtsan"><code>-Wtsan</code></a>,
+ enabled by default, warns about unsupported features in ThreadSanitizer
+ (currently <code>std::atomic_thread_fence</code>).
+ </li>
</ul>
</li>
<li>Enhancements to existing warnings:
@@ -238,8 +243,6 @@ a work-in-progress.</p>
This functionality requires Binutils version 2.36 or later.
</p>
</li>
- <li>A new warning <a href="https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wtsan"><code>-Wtsan</code></a>, enabled by default,
- warns about unsupported features in ThreadSanitizer (currently <code>std::atomic_thread_fence</code>).</li>
<li>A series of conditional expressions that compare the same variable can be transformed into a switch statement
if each of them contains a comparison expression. Example:
<pre>
@@ -376,19 +379,23 @@ a work-in-progress.</p>
(<a href="https://gcc.gnu.org/PR97518">PR97518</a>).</li>
<li>New warnings:
<ul>
- <li><code>-Wctad-maybe-unsupported</code>, disabled by default, warns
+ <li><a href="https://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Dialect-Options.html#index-Wctad-maybe-unsupported"><code>-Wctad-maybe-unsupported</code></a>,
+ disabled by default, warns
about performing class template argument deduction on a type with no
deduction guides.
</li>
- <li><code>-Wrange-loop-construct</code>, enabled by <code>-Wall</code>,
+ <li><a href="https://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Dialect-Options.html#index-Wrange-loop-construct"><code>-Wrange-loop-construct</code></a>,
+ enabled by <code>-Wall</code>,
warns when a range-based for-loop is creating unnecessary and
expensive copies.
</li>
- <li><code>-Wdeprecated-enum-enum-conversion</code>, enabled by default in
+ <li><a href="https://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Dialect-Options.html#index-Wdeprecated-enum-enum-conversion"><code>-Wdeprecated-enum-enum-conversion</code></a>,
+ enabled by default in
C++20, warns about deprecated arithmetic conversions on operands of
enumeration types, as outlined in <em>[depr.arith.conv.enum]</em>.
</li>
- <li><code>-Wdeprecated-enum-float-conversion</code>, enabled by default in
+ <li><a href="https://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Dialect-Options.html#index-Wdeprecated-enum-float-conversion"><code>-Wdeprecated-enum-float-conversion</code></a>,
+ enabled by default in
C++20, warns about deprecated arithmetic conversions on operands where
one is of enumeration type and the other is of a floating-point type,
as outlined in <em>[depr.arith.conv.enum]</em>.
@@ -399,7 +406,8 @@ a work-in-progress.</p>
forms of <code>operator new</code> or from other mismatched allocation
functions.
</li>
- <li><code>-Wvexing-parse</code>, enabled by default, warns about the most
+ <li><a href="https://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Dialect-Options.html#index-Wvexing-parse"><code>-Wvexing-parse</code></a>,
+ enabled by default, warns about the most
vexing parse rule: the cases when a declaration looks like a variable
definition, but the C++ language requires it to be interpreted as a
function declaration.