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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [ms-compatibility] Recover better from missing 'typename' in sizeof"
href="http://llvm.org/bugs/show_bug.cgi?id=18443">18443</a>
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<th>Summary</th>
<td>[ms-compatibility] Recover better from missing 'typename' in sizeof
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows XP
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>-New Bugs
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>richard-llvm@metafoo.co.uk
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, rnk@google.com
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Consider:
struct X { typedef int type; };
template<typename T> void f() { sizeof(T::type); }
template void f<X>();
Clang diagnoses this as:
<stdin>:2:43: error: unexpected type name 'type': expected expression
template<typename T> void f() { sizeof(T::type); }
^
<stdin>:3:15: note: in instantiation of function template specialization 'f<X>'
requested here
template void f<X>();
^
... but this sort of thing apparently happens inside MS system headers. We
should support this case of missing 'typename' more elegantly -- perhaps we can
teach TreeTransform to cope with this during instantiation.</pre>
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