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[Launchpad Bug Tracker <1449281@xxxxxxxxxxxxxxxxxx>]

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When querying the default_error_condition().value() of an
std::error_code, I receive a segmentation fault.

This only occurs if the version of libstdc++6 .21.  It works fine in .20
and .19.

Attached is an two-line example program that shows the segmentation
fault in .21.

Compile with:
g++ -std=c++11 error_category.cpp

GDB gives the following output:
Program received signal SIGSEGV, Segmentation fault.
0x001a0efb in std::error_category::equivalent(int, std::error_condition
const&) const ()
   from /usr/lib/i386-linux-gnu/libstdc++.so.6

My Ubuntu version is:
$ cat /etc/issue
Ubuntu 12.04.5 LTS \n \l

My g++ version is:
g++ --version
g++ (Ubuntu 4.8.1-2ubuntu1~12.04) 4.8.1
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

ldconfig says I'm linking to the following libstdc++ library:
$ ldconfig -p | grep stdc++
        libstdc++.so.6 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libstdc++.so.6
        libstdc++.so.6 (libc6) => /usr/lib/i386-linux-gnu/libstdc++.so.6
        libstdc++.so.6 (libc6) => /usr/lib32/libstdc++.so.6
$ ls -l /usr/lib/i386-linux-gnu/libstdc++.so.6
lrwxrwxrwx 1 root root 19 Apr 24 13:58 /usr/lib/i386-linux-gnu/libstdc++.so.6 -> libstdc++.so.6.0.21

** Affects: gcc-4.8 (Ubuntu)
     Importance: Undecided
         Status: New

-- 
system_error default_error_condition segfaults
https://bugs.launchpad.net/bugs/1449281
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