setting a gdb exit breakpoint not working?

Question

I\'ve set breakpoints on exit and _exit and my program (multithreaded app, running on linux 2.6.16.46-0.12 sles10), is somehow still exiting in a way I can\'t locate

Answer 1

It might be that you have some lazy references unresolved in some shared library loaded into process. I have exactly the same situation that "someone somewhere" exited process and that appeared to be unresolved reference.

Check your process with "ldd -r" option.

Looks like ld.so or whatever does lazy resolving of some symbols to uniform exit function (which should be abort IMHO).

My situation:

$ ldd ./program
undefined symbol: XXXX  (/usr/lib/libYYY.so)

$./program
program: started! 
...

Now exit appeared when I've invoked some scenario that used function that was undefined. It always exited with exitcode=127 and gdb reported 0177.