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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - win32 std::current_exception miscompilation"
href="https://bugs.llvm.org/show_bug.cgi?id=46584">46584</a>
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<th>Summary</th>
<td>win32 std::current_exception miscompilation
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows NT
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Keywords</th>
<td>miscompilation
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Backend: X86
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>nok.raven@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>craig.topper@gmail.com, llvm-bugs@lists.llvm.org, llvm-dev@redking.me.uk, spatel+llvm@rotateright.com
</td>
</tr></table>
<p>
<div>
<pre>This is probably oversimplified reproducer of Boost crash:
<a href="https://github.com/boostorg/thread/pull/320#issuecomment-653677766">https://github.com/boostorg/thread/pull/320#issuecomment-653677766</a>
#include <exception>
template <class T>
inline std::exception_ptr make_exception_ptr(T e)
{
try {
throw e;
}
catch(...) {
return std::current_exception();
}
}
struct X {};
int main()
{
try
{
std::rethrow_exception(make_exception_ptr(X{}));
}
catch(X const&)
{
}
}
clang-cl /O2 /EHsc /DNDEBUG -m32 z.cpp</pre>
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