Re: heap errors when running in gdb

[Harold L Hunt II <huntharo at msu dot edu>]

Kris,

You know, you bring up a good point.  I used to use gdb on Cygwin all 
the time for debugging both XWin.exe and non-X applications that I 
write.  However, gdb has been broken for me on Cygwin for months now; it 
never works properly anymore.  I think I recall CGF insisting that gdb 
works for him, so I must be doing something wrong.

I do recall getting the SIGTRAP errors, and I generally have to kill gdb 
via Task Manager anytime I try to use it, but I do not recall getting 
any HEAP errors.

I don't know what to tell you  :(


Harold

Thielemans, Kris wrote:

> Hi,
>
> I'm trying to debug my X program. However, when I run it in gdb, I get a
> SIGTRAP when stepping over XOpenDisplay(""). Continuing I get it another
> time (sorry, not exactly sure where), continuing, my program runs fine
> (except for the bugs that I introduce...).
> Should this worry me?
>
> I've downloaded cygwin an dXfree 1 week ago, so am running the latest of
> everything.
>
> gdb screenshot:
> ---------------
>
> warning: HEAP[test_display.exe]:
> warning: Heap block at 002541A8 modified at 002544FA past requested size of
> 34a
>
>
> Program received signal SIGTRAP, Trace/breakpoint trap.
> 0x77fa018d in ?? ()
> (gdb) c
> Continuing.
> warning: HEAP[test_display.exe]:
> warning: Invalid Address specified to RtlReAllocateHeap( 230000, 2541b0 )
>
>
> Program received signal SIGTRAP, Trace/breakpoint trap.
> 0x77fa018d in ?? ()
> (gdb) c
> Continuing.
>
> --------------------------
>
>
> Thanks!
>
>
> Kris Thielemans
>