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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Template alias crashes template diffing"
href="https://llvm.org/bugs/show_bug.cgi?id=27129">27129</a>
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<th>Summary</th>
<td>Template alias crashes template diffing
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</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>Keywords</th>
<td>crash-on-invalid
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<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>benny.kra@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org, rtrieu@google.com
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>$ cat crash.cc
template <typename T>
class vector {};
template <int Dimension>
class Point;
template <int dimension, typename T>
using Polygon = vector<Point<dimension>>;
void foo(Polygon<3, float>);
void bar() { foo(Polygon<2, float>()); }
$ clang crash.cc -std=c++11
crash.cc:10:14: error: no matching function for call to 'foo'
void bar() { foo(Polygon<2, float>()); }
^~~
unknown ArgumentKind
UNREACHABLE executed at llvm/tools/clang/lib/AST/ASTDiagnostic.cpp:1169!</pre>
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