[Boost-bugs] [Boost C++ Libraries] #5911: Crash in Boost::regex when _GLIBCXX_DEBUG is defined

Subject: [Boost-bugs] [Boost C++ Libraries] #5911: Crash in Boost::regex when _GLIBCXX_DEBUG is defined
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-09-19 00:57:42

#5911: Crash in Boost::regex when _GLIBCXX_DEBUG is defined
--------------------------------+-------------------------------------------
 Reporter:  noloader@…          |       Owner:  johnmaddock
     Type:  Bugs                |      Status:  new        
Milestone:  To Be Determined    |   Component:  regex      
  Version:  Boost 1.47.0        |    Severity:  Problem    
 Keywords:  regex match crash   |  
--------------------------------+-------------------------------------------
 Regex matching experiences a crash when _GLIBCXX_DEBUG is defined.

 The crash was confirmed on multiple platforms, including Ubuntu, Fedora,
 and openBSD.

 Full compiler command: g++ -D_GLIBCXX_DEBUG -DDEBUG=1 -g3 -ggdb -O0 regex-
 test.cpp -o regex-test.exe -lboost_regex

 $ cat regex-test.cpp
 #include <boost/regex.hpp>

 int main(int, char**)
 {
     const boost::regex re("^[a-zA-Z]*");
     bool match = boost::regex_match("asdf",re);

     return (int) !match;
 }


 $ ./regex-test.exe
 Segmentation fault (core dumped)
 $ gdb ./regex-test.exe
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 (gdb) r
 Starting program: /home/jeffrey/Desktop/regex-test.exe

 Program received signal SIGSEGV, Segmentation fault.
 0x01c6fc26 in __gnu_debug::_Safe_iterator_base::_M_detach_single (
     this=0x3c0000f9)
     at
 /usr/src/gnu/lib/libstdc++-v3/../../gcc/libstdc++-v3/src/debug.cc:242
 242               _M_prior->_M_next = _M_next;
 (gdb) bt full
 #0  0x01c6fc26 in __gnu_debug::_Safe_iterator_base::_M_detach_single (
     this=0x3c0000f9)
     at
 /usr/src/gnu/lib/libstdc++-v3/../../gcc/libstdc++-v3/src/debug.cc:242
 No locals.
 #1  0x01c710be in __gnu_debug::_Safe_sequence_base::_M_detach_all (
     this=0xcfbd3a60)
     at
 /usr/src/gnu/lib/libstdc++-v3/../../gcc/libstdc++-v3/src/debug.cc:118
         __iter = (__gnu_debug::_Safe_iterator_base *) 0x65707974
 #2  0x1c00807b in ~_Safe_sequence_base (this=0xcfbd3a60) at
 safe_base.h:185
 No locals.
 #3  0x1c00808f in ~_Safe_sequence (this=0xcfbd3a60) at safe_sequence.h:103
 No locals.
 #4  0x1c0080a9 in ~vector (this=0xcfbd3a54) at vector:101
 No locals.
 #5  0x1c008194 in ~match_results (this=0xcfbd3a54) at
 match_results.hpp:103
 No locals.
 #6  0x1c008655 in boost::regex_match<char, boost::regex_traits<char,
 boost::cpp_regex_traits<char> > > (str=0x3c0000f9 "asdf", e=@0xcfbd3ac4,
     flags=boost::regex_constants::match_default) at regex_match.hpp:90
         m = {
   m_subs = {<std::__norm::vector<boost::sub_match<const
 char*>,std::allocator<boost::sub_match<const char*> > >> =
 {<std::__norm::_Vector_base<boost::sub_match<const
 char*>,std::allocator<boost::sub_match<const char*> > >> = {
         _M_impl = {<std::allocator<boost::sub_match<const char*> >> =
 {<__gnu_cxx::new_allocator<boost::sub_match<const char*> >> = {<No data
 fields>}, <No data fields>}, _M_start = 0x88c4f100, _M_finish =
 0x88c4f124,
           _M_end_of_storage = 0x88c4f124}}, <No data fields>},
 <__gnu_debug::_Safe_sequence<std::__debug::vector<boost::sub_match<const
 char*>, std::allocator<boost::sub_match<const char*> > > >> =
 {<__gnu_debug::_Safe_sequence_base> = {
         _M_iterators = 0x3c0000f9, _M_const_iterators = 0x0,
         _M_version = 1}, <No data fields>}, _M_guaranteed_capacity = 0},
   m_base = 0x85509400 "x\177�'",
   m_null = {<std::pair<const char*,const char*>> = {first = 0x3c0000fd "",
       second = 0x3c0000fd ""}, matched = false}, m_named_subs = {px = 0x0,
     pn = {pi_ = 0x0}}, m_last_closed_paren = 0, m_is_singular = false}
 #7  0x1c005324 in main () at regex-test.cpp:8
         re = {<boost::regbase> = {<No data fields>}, m_pimpl = {
     px = 0x85509400, pn = {pi_ = 0x8ab55140}}}
         match = 28
 (gdb)

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/5911>
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