Author: dgregor
Date: Wed Nov 10 14:24:21 2010
New Revision: 118712
URL: http://llvm.org/viewvc/llvm-project?rev=118712&view=rev
Log:
Document a language-compatibility issue with function parameter names in
function prototypes in C++
Modified:
cfe/trunk/www/compatibility.html
Modified: cfe/trunk/www/compatibility.html
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/www/compatibility.html?rev=118712&r1=118711&r2=118712&view=diff
==============================================================================
--- cfe/trunk/www/compatibility.html (original)
+++ cfe/trunk/www/compatibility.html Wed Nov 10 14:24:21 2010
@@ -56,6 +56,7 @@
<li><a href="#default_init_const">Default initialization of const
variable of a class type requires user-defined default
constructor</a></li>
+ <li><a href="#param_name_lookup">Parameter name lookup</a></li>
</ul>
</li>
<li><a href="#objective-c++">Objective-C++ compatibility</a>
@@ -675,6 +676,18 @@
</pre>
<!-- =======================================================================
-->
+<h3 id="param_name_lookup">Parameter name lookup</h3>
+<!-- =======================================================================
-->
+
+<p>Due to a bug in its implementation, GCC allows the redeclaration of
function parameter names within a function prototype in C++ code, e.g.</p>
+<blockquote>
+<pre>
+void f(int a, int a);
+</pre>
+</blockquote>
+<p>Clang diagnoses this error (where the parameter name has been redeclared).
To fix this problem, rename one of the parameters.</p>
+
+<!-- =======================================================================
-->
<h2 id="objective-c++">Objective-C++ compatibility</h3>
<!-- =======================================================================
-->
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