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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Shared library relocation R_X86_64_TPOFF32 with __thread"
href="http://llvm.org/bugs/show_bug.cgi?id=17058">17058</a>
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<th>Summary</th>
<td>Shared library relocation R_X86_64_TPOFF32 with __thread
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Driver
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>haael@interia.pl
</td>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>I don't know if the code is completely correct, but I get the following error
when trying to compile a shared library:
ld: /tmp/tsd-cGUFwW.o: relocation R_X86_64_TPOFF32 against `function.data' can
not be used when making a shared object; recompile with -fPIC
Of course, recompiling with -fPIC gives the same error.
The offending code is:
===========================
int function(void)
{
static __thread int data __attribute__ ((tls_model ("initial-exec")));
return data;
}
===========================
I compile it as a shared library:
clang -nostdlib -shared -fPIC file.c
Adding or removing the -fPIC option does nothing. Compiling as a normal
executable works. The code also works when I remove the final return of the
data, possibly because the variable is optimized away.</pre>
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