Re: now gaim doesnt work...

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On Thursday 27 November 2003 17:46, Fernando Fernandez wrote:

> is this because the segmentation thing i mentioned before???? this i
> beginning to be a pain...   why are things failing to launch???

Pick a segfaulting app and run it under gdb

gdb --args /path/to/program any-args-go-here

For example, I used

gdb --args /usr/bin/mplayer badvideo.wmv

Type

(gdb) run

to start it up.  When it crashes, you'll see something like

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1084798560 (LWP 8541)]
0x0071fb22 in _int_malloc () from /lib/tls/libc.so.6

and you'll get the debugger prompt.  Type

(gdb) bt

To get a stack trace from the faulting thread, something like

#0  0x0071fb22 in _int_malloc () from /lib/tls/libc.so.6
#1  0x0071ee7d in malloc () from /lib/tls/libc.so.6
#2  0x008344c1 in _XUpdateAtomCache () from /usr/X11R6/lib/libX11.so.6
#3  0x0082ec0e in XGetAtomName () from /usr/X11R6/lib/libX11.so.6
#4  0x080a43d9 in vo_x11_check_events ()

This gives you the clue of the execution path through the app and libraries, 
this is often very meaningful for finding the problem.

(gdb) quit

exits you back to the shell.

- -Andy
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