[filesystem] segfault in path::imbue after upgrade to boost 1.52
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
On Fri, Dec 28, 2012 at 10:14 PM, Shawn Chidester <schidester@attensity.com>wrote:
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<http://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
Hi Shawn, the stack trace looks like this happens before reaching main() function. Hmm, the file is named example.cpp ;) Can you give us a minimal working code example that triggers this crash? Benjamin
the stack trace looks like this happens before reaching main() function. Hmm, the file is named example.cpp ;) Can you give us a minimal working code example that triggers this crash?
Certainly. Here's an example that causes the segfault (took me a while to wheedle it down to this):
#include <boost/filesystem.hpp> boost::filesystem::path baseDirectory = boost::filesystem::current_path(); int main() { return 0; }
Here's code that doesn't segfault:
#include <boost/filesystem.hpp> int main() { boost::filesystem::path baseDirectory = boost::filesystem::current_path(); return 0; }
Thanks, Shawn
participants (2)
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Benjamin Kircher -
Shawn Chidester