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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 --- - [regression] weak_odr global crashes linker on OS X"
href="http://llvm.org/bugs/show_bug.cgi?id=17964">17964</a>
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<th>Summary</th>
<td>[regression] weak_odr global crashes linker on OS X
</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>
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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>release blocker
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>MC
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>code@klickverbot.at
</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>For this module
---
; ModuleID = 'booltest.ll'
@foo = weak_odr thread_local global i8 1
define i32 @main() {
ret i32 0
}
---
running "llc -filetype=obj booltest.ll && clang booltest.o" yields:
---
0 0x10feeb098 __assert_rtn + 144
1 0x10ff78b48 ld::passes::tlvp::doPass(Options const&, ld::Internal&) + 1674
2 0x10feeb416 main + 520
3 0x10fedccd4 start + 52
A linker snapshot was created at:
/tmp/a.out-2013-10-17-022718.ld-snapshot
ld: Assertion failed: (0 && "wrong content type for target in tlv defs"),
function doPass, file /SourceCache/ld64/ld64-136/src/ld/passes/tlvp.cpp, line
278.
clang: error: linker command failed with exit code 1 (use -v to see invocation)
---
(LLVM r94929, ld64-136)
Because of this bug, LDC is still stuck with LLVM 3.2 on OS X (also see <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [3.3 RC] weak_odr thread_local global crashes MC for Mach-O"
href="show_bug.cgi?id=15972">bug
15972</a>). It also means that the following is likely not going to work with Clang
either:
---
template <int N> struct Foo { __thread static int a; };
template <int N> __thread int Foo<N>::a = N;
int main() { return Foo<0>::a; }
---</pre>
</div>
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