Re: Segmentation fault when exception is thrown or assertion fails [g++/gcc]

On Sun, Jul 5, 2009 at 1:50 PM, Dave
Korn<dave.korn.cygwin@...> wrote:
>  Actually even more useful would be to know what Cygwin DLL version you're
> running.  The problems page that CGF directed you to contains in particular
> the advice to run "cygcheck -s -v -r > cygcheck.out" and then send the
> cygcheck.out file ** as an attachment, not inline, please ** to the list with
> your post.

Done.

>  Well, what happened was that there's a bug somewhere, and while cygwin was
> in the process of dumping the stack trace for the abort caused by your
> assertion firing, the DLL itself had a segfault, and had to give up.  It said
> "probably corrupted stack", because that's the most common reason why you
> might end up following a stray pointer and causing a segfault when you were
> trying to unwind the stack, but in this case it's unlikely anything would have
> corrupted the stack, so either there's a real bug or perhaps just some kind of
> frame-pointer optimisation that confuses the unwind routine.

I was building my test programs without any optimizations, but with -g
option set.

Regards,
Roman Werpachowski


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