SIGSEGV handler not called upon stack overflow

[bhaible]

After installing a SIGSEGV handler and an alternate stack (and verifying that both the sigaction and sigaltstack system calls succeeded!), a stack overflow still does not invoke the SIGSEGV handler.

Expected behaviour of the attach program: A message on stderr, either "program error" or "stack overflow".

Actual behaviour: A dialog allowing to debug the program. If I enter Debug, then "continue", the error message on stderr is "Segmentation violation" - the handler was still not caught.

This works on BeOS.

[bhaible]

test program provoking a stack overflow

[bhaible]

screenshot of dialog appearing

[bhaible]

Oops, my mistake. When I add SA_ONSTACK to the sigaction flags, the signal handler is called.

You can close or trash this ticket.

[anevilyak]

Thanks for the note!