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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - pthread_key_create aborts program instead of returning an error"
href="http://llvm.org/bugs/show_bug.cgi?id=15431">15431</a>
</td>
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<tr>
<th>Summary</th>
<td>pthread_key_create aborts program instead of returning an error
</td>
</tr>
<tr>
<th>Product</th>
<td>libc++
</td>
</tr>
<tr>
<th>Version</th>
<td>3.2
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Macintosh
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>hhinnant@apple.com
</td>
</tr>
<tr>
<th>Reporter</th>
<td>d.frey@gmx.de
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>I created a small test program that checks if pthread_key_create returns with
an error when too many keys are created:
#include <stdexcept>
#include <vector>
#include <pthread.h>
struct thread_specific
{
pthread_key_t key_;
thread_specific()
{
if( pthread_key_create( &key_, NULL ) != 0 ) {
throw std::runtime_error( "pthread_key_create() failed" );
}
}
};
int main()
{
std::vector< thread_specific > v;
while( true ) {
v.emplace_back( thread_specific() );
}
}
The program throws the expected exception from the source with GCC 4.7 and with
Clang 3.2 with libstdc++. However, if I use libc++, the program is aborted
which I consider an error. Here's the output from my terminal, first the two
good-cases, last the bad-case:
$g++ -std=c++11 -pthread -O3 -Wall -Wextra t.cc -o t && ./t
terminate called after throwing an instance of 'std::runtime_error'
what(): pthread_key_create() failed
Aborted (core dumped)
$clang++ -std=c++11 -pthread -O3 -Wall -Wextra t.cc -o t && ./t
terminate called after throwing an instance of 'std::runtime_error'
what(): pthread_key_create() failed
Aborted (core dumped)
$clang++ -std=c++11 -stdlib=libc++ -pthread -O3 -Wall -Wextra t.cc -o t && ./t
cannot create pthread key for __cxa_get_globals()
Aborted (core dumped)
$
I'm on Ubuntu 12.10 (virtualized), Clang and libc++ installed via
ppa:georgekola/clang, libc++ has package version 1.0~svn170866-1~exp1ubuntu2.</pre>
</div>
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