id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
12017,Segfault with Boost program_options 1.60 debug libraries on OSX,anonymous,Vladimir Prus,"Hi,

I'm using Boost 1.60.0_1 (installed from Brew) and am trying to compile the following file:


{{{
//mytest.cpp:
#include <boost/program_options.hpp>
#include <string>

namespace po = boost::program_options;

int main(int argc, char *argv[])
{
    po::variables_map vm;
    po::options_description desc;

    desc.add_options()
    (""test,t"", po::value<std::string>()->default_value(""something""))
    ;

    po::store(po::parse_command_line(argc, argv, desc), vm);
    po::notify(vm);
    return 0;
}
}}}

I'm using CMake to compile. When compiling in Release mode, everything works fine. But when compiling in Debug mode, i get a segfault in the store() function when I run the program without the -t option:

{{{
(lldb) bt
* thread #1: tid = 0x5f2ad5, 0x000000010001b9c3 mytest`boost::program_options::value_semantic_codecvt_helper<char>::parse(boost::any&, std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&, bool) const [inlined] std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > >::size(this=0xffffffffffffffd5 size=0) const at vector:653, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0xffffffffffffffd5)
  * frame #0: 0x000000010001b9c3 mytest`boost::program_options::value_semantic_codecvt_helper<char>::parse(boost::any&, std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&, bool) const [inlined] std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > >::size(this=0xffffffffffffffd5 size=0) const at vector:653
    frame #1: 0x000000010001b9c3 mytest`boost::program_options::value_semantic_codecvt_helper<char>::parse(this=0x0000000100103740, value_store=0x00007fff5fbff408, new_tokens=size=0, utf8=<unavailable>) const + 51 at value_semantic.cpp:45
    frame #2: 0x000000010001934d mytest`boost::program_options::store(options=0x00007fff5fbff5c8, xm=0x00007fff5fbff6c8, utf8=<unavailable>) + 1207 at variables_map.cpp:125
    frame #3: 0x0000000100000cad mytest`main + 445
    frame #4: 0x00007fff92a5e5ad libdyld.dylib`start + 1
}}}

I noticed this happens only if the binary is linked with the static debug libraries, i.e libboost_program_options-d.a and libboost_program_options-mt-d.a. To reproduce without CMake:

{{{
$  c++ mytest.cpp -I/usr/local/include /usr/local/lib/libboost_program_options-d.a -o mytest && ./mytest
[1]    83707 segmentation fault  ./mytest

$  c++ mytest.cpp -DDEBUG -I/usr/local/include /usr/local/lib/libboost_program_options-d.a -o mytest && ./mytest
[1]    83709 segmentation fault  ./mytest
}}}

It crashes only when run without the -t argument; If I provide it, it works fine:
{{{
$ ./mytest -t test
}}}

It does not crash when linked statically with a non-debug library:
{{{
$ c++ mytest.cpp -DDEBUG -I/usr/local/include /usr/local/lib/libboost_program_options.a -o mytest && ./mytest
$ c++ mytest.cpp -DDEBUG -I/usr/local/include /usr/local/lib/libboost_program_options-mt.a -o mytest && ./mytest
}}}

Or when linked dynamically with one of the shared libraries:
{{{
$ c++ mytest.cpp -I/usr/local/include /usr/local/opt/boost/lib/libboost_program_options.dylib -o mytest && ./mytest
$ c++ mytest.cpp -I/usr/local/include /usr/local/opt/boost/lib/libboost_program_options-mt.dylib -o mytest && ./mytest
}}}

The only workaround I found in order to compile a working debug binary with CMake is to use -DBoost_USE_STATIC_RUNTIME=ON because for some reason it tells the compiler to link with the shared library).
",Bugs,new,To Be Determined,program_options,Boost 1.60.0,Problem,,,