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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - problem with parameter-declaration-clause/pack expansion of abstract declarator ambiguity resolution"
href="http://llvm.org/bugs/show_bug.cgi?id=15311">15311</a>
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<th>Summary</th>
<td>problem with parameter-declaration-clause/pack expansion of abstract declarator ambiguity resolution
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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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 NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++11
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>vanyacpp@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Clang can not parse this code:
template <typename ...Args>
void foo(void (*...)(Args))
{}
with error message:
1.cpp:2:17: error: expected ')'
void foo(void (*...)(Args))
^
1.cpp:2:15: note: to match this '('
void foo(void (*...)(Args))
^
1.cpp:2:6: error: declaration type contains unexpanded parameter pack 'Args'
void foo(void (*...)(Args))
^ ~~~~
2 errors generated.
When it see ... it haven't seen any unexpanded template parameter packs, so it
doesn't parse ... as part of abstract declarator leaving it to
parameter-declaration-clause.
Funny thing is that november CTP of MSVC 2012 is the only compiler that can
parse this code correctly.</pre>
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</p>
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