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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Clang disagrees with GCC about abi:cxx11 for templated member functions."
href="https://bugs.llvm.org/show_bug.cgi?id=35689">35689</a>
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<th>Summary</th>
<td>Clang disagrees with GCC about abi:cxx11 for templated member functions.
</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>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>C++11
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>jeremysalwen@gmail.com
</td>
</tr>
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<pre>Created <span class=""><a href="attachment.cgi?id=19578" name="attach_19578" title="Program demonstrating the disagreement.">attachment 19578</a> <a href="attachment.cgi?id=19578&action=edit" title="Program demonstrating the disagreement.">[details]</a></span>
Program demonstrating the disagreement.
I have attached a minimized test case of the bug I am encountering, where g++
(5.4.0) and clang (-3.8, 3.9, 4.0) disagree on whether a function is given
[abi:cxx11] mangling.
Steps to reproduce:
$ g++ -std=c++11 -O1 main.cpp -c -o foo.o
$ objdump --syms /tmp/foo2.o | c++filt | grep bar
0000000000000000 l d .text._ZNK3fooIiE3barEPKcS2_ 0000000000000000
.text._ZNK3fooIiE3barEPKcS2_
0000000000000000 w F .text._ZNK3fooIiE3barEPKcS2_ 0000000000000017
foo<int>::bar(char const*, char const*) const
$ clang++-4.0 -std=c++11 -O1 main.cpp -c -o foo2.o
$ objdump --syms /tmp/foo2.o | c++filt | grep bar
0000000000000000 l d .text._ZNK3fooIiE3barB5cxx11EPKcS2_
0000000000000000 .text._ZNK3fooIiE3barB5cxx11EPKcS2_
0000000000000000 w F .text._ZNK3fooIiE3barB5cxx11EPKcS2_
0000000000000048 foo<int>::bar[abi:cxx11](char const*, char const*) const
Note that Clang thinks the function bar is cxx11 abi, while gcc does not. This
causes linking failures.
This bug was reduced from a boost::regex linking failure discussed here:
<a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=823978">https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=823978</a></pre>
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