[Boost-bugs] [Boost C++ Libraries] #9054: filesystem::path::codecvt() segfault pre-main with static filesystem

Subject: [Boost-bugs] [Boost C++ Libraries] #9054: filesystem::path::codecvt() segfault pre-main with static filesystem
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-08-27 16:18:05

#9054: filesystem::path::codecvt() segfault pre-main with static filesystem
------------------------------+------------------------
 Reporter:  lukester_null@…   |      Owner:  bemandawes
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  filesystem
  Version:  Boost 1.54.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+------------------------
 Hi

 Should boost::filesystem::path::codecvt() work pre-main when using static
 builds of the library? I'm getting a NULL std::locale::_M_impl in
 std::locale::locale(const std::locale &).

 Simple test case:

 {{{
 #include "boost/filesystem.hpp"

 static const boost::filesystem::path::codecvt_type &dummy =
   boost::filesystem::path::codecvt();

 int main()
 {
     return 0;
 }
 }}}

 Compiled with:

 g++ Main.cpp -o Test -lboost_filesystem -lboost_system
 -L/path/to/static/libs/only -I/path/to/boost -g

 Yields:

 {{{
 (gdb) bt
 #0  __atomic_add_dispatch (__val=1, __mem=0x0)
     at /usr/src/debug/gcc-4.8.1-20130603/obj-x86_64-redhat-linux/x86_64
 -redhat-linux/libstdc++-v3/include/ext/atomicity.h:96
 #1  _M_add_reference (this=0x0)
     at /usr/src/debug/gcc-4.8.1-20130603/obj-x86_64-redhat-linux/x86_64
 -redhat-linux/libstdc++-v3/include/bits/locale_classes.h:510
 #2  std::locale::locale (
     this=0x609630
 <boost::filesystem::path::codecvt()::posix_lazy_initialization>,
 __other=...)
     at ../../../../../libstdc++-v3/src/c++98/locale.cc:80
 #3  0x00000000004023dc in boost::filesystem::path::codecvt() ()
 #4  0x0000000000401a2f in __static_initialization_and_destruction_0
 (__initialize_p=1,
     __priority=65535) at Main.cpp:3
 #5  0x0000000000401a4b in _GLOBAL__sub_I_main () at Main.cpp:8
 #6  0x000000000040787d in __libc_csu_init ()
 #7  0x0000003f09a21b05 in __libc_start_main (main=0x4019c0 <main()>,
 argc=1, ubp_av=0x7fffffffd6d8,
     init=0x407830 <__libc_csu_init>, fini=<optimized out>,
 rtld_fini=<optimized out>,
     stack_end=0x7fffffffd6c8) at libc-start.c:217
 #8  0x00000000004018fd in _start ()
 }}}

 Move the dummy into main() and all is well.

 (The actual code isn't trying to call codecvt directly; it's creating a
 path from a G++ vstring.)

 Thanks

 Luke Elliott.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/9054>
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