[Boost-users] [filesystem] segfault in path::imbue after upgrade to boost 1.52

Subject: [Boost-users] [filesystem] segfault in path::imbue after upgrade to boost 1.52
From: Shawn Chidester (schidester_at_[hidden])
Date: 2012-12-28 16:14:24

Just upgraded from boost 1.47 to 1.52 and I'm experiencing segmentation 
faults in boost::filesystem::path::imbue.  This is on 64-bit Ubuntu 
12.04 and 12.10.  Compiling with g++-4.6

Here is a stack trace from valgrind:

==26893== Memcheck, a memory error detector
==26893== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==26893== Using Valgrind-3.9.0.SVN and LibVEX; rerun with -h for 
copyright info
==26893== Command: bin/example
==26893==
==26893== Invalid read of size 4
==26893==    at 0x9843970: std::locale::locale(std::locale const&) (in 
/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.17)
==26893==    by 0x69FAD0F: boost::filesystem::path::imbue(std::locale 
const&) (path.cpp:918)
==26893==    by 0x69FAC76: boost::filesystem::path::codecvt() (path.cpp:911)
==26893==    by 0x69F8546: 
boost::enable_if<boost::filesystem::path_traits::is_pathable<boost::decay<char*>::type>, 
boost::filesystem::path&>::type 
boost::filesystem::path::operator=<char*>(char* const&) (path.hpp:202)
==26893==    by 0x69F4737: 
boost::filesystem::detail::current_path(boost::system::error_code*) 
(operations.cpp:1077)
==26893==    by 0x5AB0D2C: boost::filesystem::current_path() 
(operations.hpp:429)
==26893==    by 0x5AB0447: 
__static_initialization_and_destruction_0(int, int) (example.cpp:53)
==26893==    by 0x5AB0BB5: _GLOBAL__sub_I_example.cpp (example.cpp:1192)
==26893==    by 0x400F315: call_init.part.0 (dl-init.c:85)
==26893==    by 0x400F3EE: _dl_init (dl-init.c:52)
==26893==    by 0x40016F9: ??? (in /lib/x86_64-linux-gnu/ld-2.15.so)

The stack trace looks the same in GDB.  In case it's of any use here's 
what "path_locale" looks like at path.cpp:918

(gdb) frame
#1  0x00007ffff561ed10 in boost::filesystem::path::imbue (loc=...)
     at boost/libs/filesystem/src/path.cpp:918
918     std::locale temp(path_locale);

(gdb) print path_locale
$1 = {_M_impl = 0x0}

I'm guessing the crash has to do with path_locale being uninitialized, 
but I don't know what to do about it (if that is indeed the problem).

If anyone can provide some insight (or better yet, a solution) I would 
be very grateful!

Thanks,
Shawn