Re: Segfault when a gnuplot graph is closed?

[Arnaud Desitter]

----- Original Message ----- 
From: "Atwood, Robert C" <...>
Newsgroups: gmane.comp.debugging.ddd.general
Sent: Tuesday, November 25, 2003 12:51 PM
Subject: RE: Segfault when a gnuplot graph is closed?


>
>
> >I even tried running
> >ddd in valgrind and following your procedure, and nothing
> >shows up.
>
>
> Valgrind... that is new to me, so I just grabbed it and gave it a try ...
> this could be a very useful addiditon to my debugging arsenal!
>
>
>
> Attatched is the output, with the default suppression and then with a
> modified suppression file with some X library suppressions removed.
>
> Does all this imply that it is actually a bug in this version of the X
> library rather than DDD? or an incompatibility between versions??
>

Please use --num-callers=20 or so to get a longer stack trace.
Thanks,

>  Here is a little excerpt of the part where it segfaults (the whole file
is
> attatched):
>
> ==3703==
> ==3703== Use of uninitialised value of size 4
> ==3703==    at 0x4051E319: XGetGCValues (in /usr/X11R6/lib/libX11.so.6.2)
> ==3703==    by 0x402FD2F6: set_values (SeparatoG.c:695)
> ==3703==    by 0x4049E298: (within /usr/X11R6/lib/libXt.so.6.0)
> ==3703==    by 0x4049E7A2: XtSetValues (in /usr/X11R6/lib/libXt.so.6.0)
> ==3703==
> ==3703== Invalid read of size 4
> ==3703==    at 0x4051E319: XGetGCValues (in /usr/X11R6/lib/libX11.so.6.2)
> ==3703==    by 0x402FD2F6: set_values (SeparatoG.c:695)
> ==3703==    by 0x4049E298: (within /usr/X11R6/lib/libXt.so.6.0)
> ==3703==    by 0x4049E7A2: XtSetValues (in /usr/X11R6/lib/libXt.so.6.0)
> ==3703==    Address 0x682F6F1D is not stack'd, malloc'd or free'd
> Segmentation fault (core dumped)
> ==3703==
> ==3703== ERROR SUMMARY: 10577 errors from 81 contexts (suppressed: 17347
> from 7)
> ==3703==
> ==3703== 1 errors in context 1 of 81:
> ==3703== Invalid read of size 4
> ==3703==    at 0x4051E319: XGetGCValues (in /usr/X11R6/lib/libX11.so.6.2)
> ==3703==    by 0x402FD2F6: set_values (SeparatoG.c:695)
> ==3703==    by 0x4049E298: (within /usr/X11R6/lib/libXt.so.6.0)
> ==3703==    by 0x4049E7A2: XtSetValues (in /usr/X11R6/lib/libXt.so.6.0)
> ==3703==    Address 0x682F6F1D is not stack'd, malloc'd or free'd
> ==3703==
>