[Bug c++/34418] New: Runtime segfault when compiled with _GLIBCXX_DEBUG defined

[Bug c++/34418] New: Runtime segfault when compiled with _GLIBCXX_DEBUG defined

[daniel dot hornung at gmx dot de]

Hello, the following test program segfaults when _GLIBCXX_DEBUG was defined at
compile time.  People in #boost@freenode 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
Copyright 2005 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
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> > > (
    s=@0x7ffff9135a10, e=@0x7ffff9135a00,
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

[Bug c++/34418] Runtime segfault when compiled with _GLIBCXX_DEBUG defined

[pcarlini at suse dot de]

------- Comment #1 from pcarlini at suse dot de  2007-12-10 15:17 -------
I cannot reproduce on x86_64-linux, both mainline and 4_2-branch, with the
boost_regex library as provided in OpenSUSE 10.3.

Anyway, the problem seems rather hard to debug because of the the boost_regex
.so library. Please follow the instructions at:

  http://gcc.gnu.org/bugs.html

try to reduce the problem as much as possible and in case also provide the
exact Boost version. I would also suggest testing a gcc4.2.x release, gcc4.1.x
is by now only minimally maintained.


-- 

pcarlini at suse dot de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34418

[Bug c++/34418] Runtime segfault when compiled with _GLIBCXX_DEBUG defined

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2008-09-03 02:04 -------
No testcase in 3 months so closing as invalid.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34418