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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Use of undefined local struct triggers assertion in SemaTemplateInstantiate.cpp"
href="http://llvm.org/bugs/show_bug.cgi?id=17194">17194</a>
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<th>Summary</th>
<td>Use of undefined local struct triggers assertion in SemaTemplateInstantiate.cpp
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>3.3
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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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>
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<th>Reporter</th>
<td>m.krause@tu-harburg.de
</td>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Trying to compile the following with clang SVN trunk 190512 (also tried
clang-3.3, same result) triggers an assertion in
SemaTemplateInstantiate.cpp:2758: llvm::PointerUnion<clang::Decl*,
llvm::SmallVector<clang::Decl*, 4u>*>*
clang::LocalInstantiationScope::findInstantiationOf(const clang::Decl*):
Assertion `isa<LabelDecl>(D) && "declaration not instantiated in this scope"'
failed.
--- SNIP ---
template <class U>
class B {};
template <typename T>
void g() {
B<struct X> b;
}
void f() {
g<double>();
}
--- SNIP ---
The assertion is NOT triggered, for example, when I replace g() with the
following version:
void g() {
struct X;
B<X> b;
}
Command line was simply 'clang++ -std=c++11 crash.cpp'.
This might be related to <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - Crash on using local struct in function template as template parameter"
href="show_bug.cgi?id=9685">bug #9685</a>, but I'm not sure.</pre>
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