[Bug gdb/13619] Crash when running binary a second time in the same session

["hyrum at hyrumwright dot org" <sourceware-bugzilla@sourceware.org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=13619

--- Comment #3 from Hyrum Wright <hyrum at hyrumwright dot org> 2012-02-07 18:20:15 UTC ---
Rebuilt without optimization (which, incidentally is itself non-trivial), and I
now get the following stack trace:

[[[
(gdb) bt
#0  0x00007fff94e0e6c0 in malloc_error_break ()
#1  0x00007fff94e0e805 in free ()
#2  0x0000000100333dc2 in xfree (ptr=0x10046e998) at common-utils.c:107
#3  0x000000010020271a in gdb_bfd_unref (abfd=0x100be5e50) at objfiles.c:1557
#4  0x00000001001ff67b in free_objfile (objfile=0x10124e800) at objfiles.c:597
#5  0x0000000100200c0e in objfile_purge_solibs () at objfiles.c:986
#6  0x00000001000267b9 in no_shared_libraries (ignored=0x0, from_tty=1) at
solib.c:1205
#7  0x00000001001e9fbd in target_pre_inferior (from_tty=1) at target.c:2479
#8  0x0000000100186a56 in run_command_1 (args=0x0, from_tty=1,
tbreak_at_main=0) at infcmd.c:516
#9  0x0000000100186d87 in run_command (args=0x0, from_tty=1) at infcmd.c:620
#10 0x000000010007487c in do_cfunc (c=0x100b40300, args=0x0, from_tty=1) at
cli-decode.c:67
#11 0x0000000100079117 in cmd_func (cmd=0x100b40300, args=0x0, from_tty=1) at
cli-decode.c:1810
#12 0x00000001002eef5c in execute_command (p=0x100b0a221 "", from_tty=1) at
top.c:441
#13 0x00000001001ba2ca in command_handler (command=0x100b0a220 "") at
event-top.c:435
#14 0x00000001001baad3 in command_line_handler (rl=0x100becf80 "??\v\020") at
event-top.c:636
#15 0x0000000100359359 in rl_callback_read_char () at callback.c:220
#16 0x00000001001b9a11 in rl_callback_read_char_wrapper (client_data=0x0) at
event-top.c:169
#17 0x00000001001ba177 in stdin_event_handler (error=0, client_data=0x0) at
event-top.c:375
#18 0x00000001001b883a in handle_file_event (data={ptr = 0x7fff00000000,
integer = 0}) at event-loop.c:827
#19 0x00000001001b7c1e in process_event () at event-loop.c:401
#20 0x00000001001b7d1d in gdb_do_one_event () at event-loop.c:465
#21 0x00000001001b7d92 in start_event_loop () at event-loop.c:490
#22 0x00000001001b9a5b in cli_command_loop () at event-top.c:182
#23 0x00000001001ae49a in current_interp_command_loop () at interps.c:309
#24 0x00000001001af2de in captured_command_loop (data=0x0) at main.c:232
#25 0x00000001001ad51a in catch_errors (func=0x1001af2c0
<captured_command_loop>, func_args=0x0, errstring=0x100486080 "", mask=6) at
exceptions.c:502
#26 0x00000001001b0a25 in captured_main (data=0x7fff5fbffa20) at main.c:942
#27 0x00000001001ad51a in catch_errors (func=0x1001af340 <captured_main>,
func_args=0x7fff5fbffa20, errstring=0x100486080 "", mask=6) at exceptions.c:502
#28 0x00000001001b0bc4 in gdb_main (args=0x7fff5fbffa20) at main.c:951
#29 0x0000000100001423 in main (argc=2, argv=0x7fff5fbffa80) at gdb.c:34
]]]

It looks like the calls to gdb_bfd_unref() and xfree() were optimized out in
the first version, but things are otherwise the same.

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