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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - _Atomic _Bool decrement gives infinite loop"
href="https://bugs.llvm.org/show_bug.cgi?id=33863">33863</a>
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<th>Summary</th>
<td>_Atomic _Bool decrement gives infinite loop
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>4.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>MacOS X
</td>
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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>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>mib.bugzilla@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>clang -v
clang version 4.0.1 (tags/RELEASE_401/final)
Target: x86_64-apple-darwin14.4.0
Thread model: posix
InstalledDir:
/site/spt/usr8/mblower/bin/clang+llvm-4.0.1-x86_64-apple-macosx10.9.0/bin
sptem26:_test mblower$ cat tm.c
void
test_minus (void)
{
_Atomic _Bool a = 0;
_Bool b = 1;
_Atomic _Bool c = 1;
a -= b; // Test completes OK if this line is removed.
a -= c;
}
int main(void)
{
test_minus ();
}
I adapted this testcase from gcc testsuite. Execution of the 2nd decrement
doesn't complete. It works OK without the first decrement.
--Melanie Blower (I work for Intel on the Intel c++ compiler)</pre>
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