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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Using std::__throw_bad_weak_ptr can produce invalid RTTI for std::runtime_error"
href="https://bugs.llvm.org/show_bug.cgi?id=37487">37487</a>
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<th>Summary</th>
<td>Using std::__throw_bad_weak_ptr can produce invalid RTTI for std::runtime_error
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Macintosh
</td>
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<th>OS</th>
<td>MacOS X
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>davidcapello@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>If we compile a .cpp file with -frtti which throws std::runtime_error and
catches std::exception&, but then we compile another file with -fno-rtti that
uses std::__throw_bad_weak_ptr() in some way and we link both files in one
binary, the final std::runtime_error class is not identified as a derived class
of std::exception (so the catch code is not executed).
Here is a minimal example of this case:
<a href="https://gist.github.com/dacap/7ddffbe401eb42620de397e47edfcc76">https://gist.github.com/dacap/7ddffbe401eb42620de397e47edfcc76</a>
clang --version
Apple LLVM version 9.1.0 (clang-902.0.39.1)
Target: x86_64-apple-darwin17.5.0
Thread model: posix
InstalledDir:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin</pre>
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</p>
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