[Bug python/14635] New: crash in python gdb during quit #2

["jan.kratochvil at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=14635

             Bug #: 14635
           Summary: crash in python gdb during quit #2
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: python
        AssignedTo: unassigned@sourceware.org
        ReportedBy: jan.kratochvil@redhat.com
    Classification: Unclassified
              Host: i386-unknown-linux-gnu
            Target: i386-unknown-linux-gnu


(gdb) bt
#0  0x082a78fd in salpy_dealloc (self=<gdb.Symtab_and_line at remote
0xf722f698>) at ./python/py-symtab.c:302
#1  0xf7522a69 in insertdict (mp=mp@entry=0xf72b035c, key=key@entry='sal',
hash=-535590009, value=None) at
/usr/src/debug/Python-2.7.3/Objects/dictobject.c:539
#2  0xf75250e9 in PyDict_SetItem (op=op@entry={'static_block': None, 'new_pc':
None, 'static_symbols': None, 'sal': None, '__builtins__': <module at remote
0xf728011c>, 'symtab': <gdb.Symtab at remote 0xf722f6e0>, 'frame': <gdb.Frame
at remote 0xf7227a10>, 'GdbRemoveReadlineFinder': <classobj at remote
0xf72111ac>, 'sym': <gdb.Symbol at remote 0xf722f788>, '__package__': None,
'sys': <module at remote 0xf72802e4>, 'global_symbols': ['func', 'main', 'qq'],
'gdb': <module at remote 0xf7212aac>, '__name__': '__main__', '__doc__': None,
'global_block': <gdb.Block at remote 0xf722f758>}, key='sal', value=None) at
/usr/src/debug/Python-2.7.3/Objects/dictobject.c:784
#3  0xf7528f51 in _PyModule_Clear (m=<module at remote 0xf7280494>) at
/usr/src/debug/Python-2.7.3/Objects/moduleobject.c:138
#4  0xf759762a in PyImport_Cleanup () at
/usr/src/debug/Python-2.7.3/Python/import.c:445
#5  0xf75a3975 in Py_Finalize () at
/usr/src/debug/Python-2.7.3/Python/pythonrun.c:454
#6  Py_Finalize () at /usr/src/debug/Python-2.7.3/Python/pythonrun.c:400
#7  0x08299ae3 in finalize_python (ignore=0x0) at ./python/python.c:1286
#8  0x082fa816 in do_my_cleanups (pmy_chain=0x93ba8cc <final_cleanup_chain>,
old_chain=0x8b5cdd4 <sentinel_cleanup>) at cleanups.c:155
#9  0x082fa88c in do_final_cleanups (old_chain=0x8b5cdd4 <sentinel_cleanup>) at
cleanups.c:186
#10 0x0844b352 in quit_target (arg=0xffc27318) at top.c:1304
#11 0x083648fb in catch_errors (func=0x844b2fb <quit_target>,
func_args=0xffc27318, errstring=0x8ba93c0 "Quitting: ", mask=6) at
exceptions.c:546
#12 0x0844b3ca in quit_force (args=0x0, from_tty=1) at top.c:1332
#13 0x0827a557 in quit_command (args=0x0, from_tty=1) at ./cli/cli-cmds.c:330
#14 0x08274c22 in do_cfunc (c=0x9cf7658, args=0x0, from_tty=1) at
./cli/cli-decode.c:114
#15 0x08277515 in cmd_func (cmd=0x9cf7658, args=0x0, from_tty=1) at
./cli/cli-decode.c:1846
#16 0x0844a1cb in execute_command (p=0x8b78ccc "", from_tty=1) at top.c:486
#17 0x0836dda2 in command_handler (command=0x0) at event-top.c:424
#18 0x0836df25 in command_line_handler (rl=0x0) at event-top.c:501
#19 0x08497e53 in rl_callback_read_char () at callback.c:220
#20 0x0836d983 in rl_callback_read_char_wrapper (client_data=0x0) at
event-top.c:163
#21 0x0836dcfd in stdin_event_handler (error=0, client_data=0x0) at
event-top.c:369
#22 0x0836cd55 in handle_file_event (data=...) at event-loop.c:827
#23 0x0836c34f in process_event () at event-loop.c:401
#24 0x0836c41e in gdb_do_one_event () at event-loop.c:465
#25 0x0836c470 in start_event_loop () at event-loop.c:490
#26 0x0836d9ac in cli_command_loop () at event-top.c:176
#27 0x08365a33 in current_interp_command_loop () at interps.c:332
#28 0x08366247 in captured_command_loop (data=0x0) at main.c:226
#29 0x083648fb in catch_errors (func=0x8366232 <captured_command_loop>,
func_args=0x0, errstring=0x8b768af "", mask=6) at exceptions.c:546
#30 0x08367512 in captured_main (data=0xffc27790) at main.c:999
#31 0x083648fb in catch_errors (func=0x8366497 <captured_main>,
func_args=0xffc27790, errstring=0x8b768af "", mask=6) at exceptions.c:546
#32 0x0836755e in gdb_main (args=0xffc27790) at main.c:1008
#33 0x080be13f in main (argc=5, argv=0xffc27844) at gdb.c:34
(gdb) frame
#0  0x082a78fd in salpy_dealloc (self=<gdb.Symtab_and_line at remote
0xf722f698>) at ./python/py-symtab.c:302
302        set_objfile_data (self_sal->symtab->symtab->objfile,
(gdb) l
297      sal_object *self_sal = (sal_object *) self;
298    
299      if (self_sal->prev)
300        self_sal->prev->next = self_sal->next;
301      else if (self_sal->symtab != (symtab_object * ) Py_None)
302        set_objfile_data (self_sal->symtab->symtab->objfile,
303                  salpy_objfile_data_key, self_sal->next);
304    
305      if (self_sal->next)
306        self_sal->next->prev = self_sal->prev;
(gdb) p self_sal->symtab
$2 = (symtab_object *) 0x0

/home/jkratoch/hammock/20120927Build-gdbcvs-gdbserver-f18/fedora-18-i386/build/src/gdb/testsuite.unix.-m32/core.26928

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