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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Clang crashes if __private_extern__ is undef'd and used in C++"
href="https://bugs.llvm.org/show_bug.cgi?id=43628">43628</a>
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<th>Summary</th>
<td>Clang crashes if __private_extern__ is undef'd and used in C++
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>8.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</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
</td>
</tr>
<tr>
<th>Reporter</th>
<td>rnk@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>Compile this C++ code:
#undef __private_extern__
struct ABC {
static double a;
};
__private_extern__ double ABC::a = 1.0;
This crashes at SemaDecl.cpp:6649 saying:
$ clang -c t.cpp
C storage class in c++!
UNREACHABLE executed at C:\src\llvm-project\clang\lib\Sema\SemaDecl.cpp:6649!
See also <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED WONTFIX - __private_extern__ should not be recognized on non-Darwin platforms"
href="show_bug.cgi?id=9375">https://bugs.llvm.org/show_bug.cgi?id=9375</a>, where I guess a user
wanted us to restrict this extension to MachO platforms.
Noticed while working on <a href="https://reviews.llvm.org/D68055">https://reviews.llvm.org/D68055</a>.</pre>
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