DS3100: buggy cc
Matt Thomas
thomas at mipsbx.nac.dec.com
Wed Jun 7 01:12:41 AEST 1989
> I have not got any responses on my query yet and my problem remains. In the
> meantime I have been able to extract the essence of the bug and put it into a
> small example which is included below. What can possibly go wrong???
You have a bug in your program.
>[most of progam deleted]
>
> do_nextevent()
> {
> XAnyEvent e;
>
> XNextEvent(display, &e);
> }
XNextEvent takes a pointer to a XEvent as the second parameter, not a
pointer to XAnyEvent. The structure XAnyEvent is smaller than XEvent
so when XNextEvent copies the event into *e, part fo the stack is over-
written causing the segmentation fault.
Changing XAnyEvent e to XEvent e will make the program work correctly.
--
Matt Thomas Internet: thomas at decwrl.dec.com
DECnet-Ultrix Development UUCP: ...!decwrl!thomas
Digital Equipment Corporation Disclaimer: This message reflects my own
Littleton, MA warped views, etc.
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