Hello, the following test program segfaults when _GLIBCXX_DEBUG was defined at
compile time. People in [EMAIL PROTECTED] claimed this was rather be a gcc bug,
so I post it here:
=======
#include <boost/regex.hpp>
int main()
{
std::string s("table.dat");
boost::regex expression("table.dat");
boost::regex_match(s, expression);
return 0;
}
// try to compile it with and without the _GLIBCXX_DEBUG macro defined
//
// works OK: g++ -Wall -pedantic -g -lboost_regex -o test test.cc
// segfaults:g++ -Wall -pedantic -g -lboost_regex -D _GLIBCXX_DEBUG -o test
test.cc
=======
A backtrace:
=======
src/test> gdb ./test
GNU gdb 6.4
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This GDB was configured as "x86_64-suse-linux"...Using host libthread_db
library "/lib64/libthread_db.so.1".
(gdb) run
Starting program: /home/dhornun/diplom/sphere_packing/version3/src/test/test
warning: Lowest section in /usr/lib64/libicudata.so.34 is .hash at
00000000000000e8
[Thread debugging using libthread_db enabled]
[New Thread 47694321665408 (LWP 6180)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 47694321665408 (LWP 6180)]
0x00002b60b1c940cd in __gnu_debug::_Safe_iterator_base::_M_detach () from
/usr/lib64/libstdc++.so.6
(gdb) bt
#0 0x00002b60b1c940cd in __gnu_debug::_Safe_iterator_base::_M_detach () from
/usr/lib64/libstdc++.so.6
#1 0x00002b60b1c94176 in __gnu_debug::_Safe_iterator_base::_M_attach () from
/usr/lib64/libstdc++.so.6
#2 0x00002b60b1c942f3 in __gnu_debug::_Safe_sequence_base::_M_detach_all ()
from /usr/lib64/libstdc++.so.6
#3 0x0000000000403317 in ~_Safe_sequence_base (this=0x7ffff9135968) at
/usr/include/c++/4.1.0/debug/safe_base.h:170
#4 0x000000000040332f in ~_Safe_sequence (this=0x7ffff9135968) at
/usr/include/c++/4.1.0/debug/safe_sequence.h:99
#5 0x0000000000403350 in ~vector (this=0x7ffff9135950) at
/usr/include/c++/4.1.0/debug/vector:95
#6 0x00000000004033df in ~match_results (this=0x7ffff9135950) at
/usr/include/boost/regex/v4/match_results.hpp:74
#7 0x00000000004037d5 in boost::regex_match<std::char_traits<char>,
std::allocator<char>, char, boost::regex_traits<char,
boost::cpp_regex_traits<char> > > (
[EMAIL PROTECTED], [EMAIL PROTECTED],
flags=boost::regex_constants::match_default) at
/usr/include/boost/regex/v4/regex_match.hpp:93
#8 0x00000000004020d6 in main () at test.cc:10
(gdb)
=======
If this is definitely not a gcc problem, I would consider moving this over to
boost.
--
Summary: Runtime segfault when compiled with _GLIBCXX_DEBUG
defined
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: daniel dot hornung at gmx dot de
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34418
