Re: gdb-5.0 bug

[Sean Ahern]

Sean Ahern wrote:
> After that point, most commands to explore my program didn't work.

I tried "info thread" and gdb dumped core.

The stack trace was:

#0  get_next_frame (frame=0x0) at blockframe.c:258
#1  0x806da96 in find_relative_frame (frame=0x0, level_offset_ptr=0xbfffed74)
    at stack.c:1725
#2  0x80cc9af in info_threads_command (arg=0x0, from_tty=1) at thread.c:479
#3  0x80b6dd3 in execute_command (p=0x81bcfdb "", from_tty=1) at top.c:1546
#4  0x8092d48 in command_handler (command=0x81bcfd0 "info thread")
    at event-top.c:515
#5  0x8093362 in command_line_handler (rl=0x8691b88 "@H'\b\020Ð\"\b\020")
    at event-top.c:817
#6  0x8139d64 in rl_callback_read_char () at callback.c:122
#7  0x8092758 in rl_callback_read_char_wrapper (client_data=0x0)
    at event-top.c:166
#8  0x8092c3d in stdin_event_handler (error=0, client_data=0x0)
    at event-top.c:422
#9  0x80cd3d3 in handle_file_event (event_file_desc=0) at event-loop.c:742
#10 0x80ccef9 in process_event () at event-loop.c:377
#11 0x80ccf35 in gdb_do_one_event (data=0x0) at event-loop.c:414
#12 0x80b6173 in catch_errors (func=0x80ccf0c <gdb_do_one_event>, args=0x0, 
    errstring=0x816e3c0 "", mask=6) at top.c:615
#13 0x80ccf53 in start_event_loop () at event-loop.c:438
#14 0x8092825 in cli_command_loop () at event-top.c:196
#15 0x806b825 in captured_command_loop (data=0x0) at main.c:104
#16 0x80b6173 in catch_errors (func=0x806b810 <captured_command_loop>, 
    args=0x0, errstring=0x81450b1 "", mask=6) at top.c:615
#17 0x806c203 in captured_main (data=0xbffff228) at main.c:749
#18 0x80b6173 in catch_errors (func=0x806b854 <captured_main>, 
    args=0xbffff228, errstring=0x81450b1 "", mask=6) at top.c:615
#19 0x806c22f in main (argc=3, argv=0xbffff27c) at main.c:761
#20 0x400989cb in __libc_start_main (main=0x806c208 <main>, argc=3, 
    argv=0xbffff27c, init=0x806ad1c <_init>, fini=0x8144f8c <_fini>, 
    rtld_fini=0x4000aea0 <_dl_fini>, stack_end=0xbffff274)
    at ../sysdeps/generic/libc-start.c:92

I hope this helps.

-Sean

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Just War Doctrine (http://www.utm.edu/research/iep/j/justwar.htm)