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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - UNREACHABLE executed in ItaniumMangle.cpp"
href="https://llvm.org/bugs/show_bug.cgi?id=22870">22870</a>
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<th>Summary</th>
<td>UNREACHABLE executed in ItaniumMangle.cpp
</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>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>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>Yunzhong_Gao@playstation.sony.com
</td>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, richard-llvm@metafoo.co.uk
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>It looks like after r228274, the following test case hits an unreachable.
$ clang -S -std=c++11 -emit-llvm -o - test.cpp
/* test.cpp */
struct Q { int a, b, c; };
struct QQ { struct Q q; };
template<class T> decltype(QQ{ .q.b = 10 }, T()) foo(T t) {}
int main() {
foo(5);
return 0;
}
/* end test.cpp */
It seems that we are trying to mangle the syntactic form of an InitListExpr and
the enclosed DesignatedInitExpr is causing trouble.
Can someone kindly take a look?</pre>
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