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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang name lookup finds name inappropriately"
href="http://llvm.org/bugs/show_bug.cgi?id=20733">20733</a>
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<th>Summary</th>
<td>Clang name lookup finds name inappropriately
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>3.4
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>hyrosen@mail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>For this code in file g.cpp:
template <class > struct A { enum { V }; };
template <int > struct C { };
template <class T> struct S : C<A<T>::V> { };
void F(const S<void> & = S<void>()) { V; }
clang reports
g.cpp:5:39: warning: expression result unused [-Wunused-value]
void F(const S<void> & = S<void>()) { V; }
^
1 warning generated.
Obviously there is no bare 'V' that should be visible in F. GCC says
g.cpp: In function 'void F(const S<void>&)':
g.cpp:5:39: error: 'V' was not declared in this scope
void F(const S<void> & = S<void>()) { V; }
^
The clang AST says that the 'V' in 'F' is:
DeclRefExpr <col:39> 'enum A<void>::<anonymous at g.cpp:1:44>'
EnumConstant 'V' 'enum A<void>::<anonymous at g.cpp:1:44>'</pre>
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