mcintyre@cs.rpi.edu (David McIntyre) (09/02/89)
I have a very large application that uses several nested vPaned
widgets.
At (seemingly) random intervals, we get core dumps while inside
vPaned code. Because of the randomness, it makes me think about
memory problems.
Debugging inside vPaned code reveals that sometimes the num_panes
variable of the vPane gets set to something like 76899847, or
the like. I cannot detect where the problem is happening, but
once this variable is munged a core dump is inevitable.
The Question: Have other people had similar problems with vPane?
Has anyone come up with a fix?
Thanks,
Dave
Dave "mr question" McIntyre | "....say you're thinking about a plate
mcintyre@turing.cs.rpi.edu | of shrimp.....and someone says to
office : 518-276-8633 | you `plate,' or `shrimp'......"
home : 518-271-6664 |kit@EXPO.LCS.MIT.EDU (Chris D. Peterson) (09/05/89)
> I have a very large application that uses several nested vPaned > widgets. > At (seemingly) random intervals, we get core dumps while inside > vPaned code. Because of the randomness, it makes me think about > memory problems. > Debugging inside vPaned code reveals that sometimes the num_panes > variable of the vPane gets set to something like 76899847... I fixed this bug less than a week ago, why is it that we all see these things at the same time? The problem is that num_panes is not being initialized properly. If you set the num_panes variable to zero in the initialize proc. all should be well. For those of you who are wondering why this hasn't bitten you. It turns out that this problem only occures if the vPaned widget is realized before it receives any managed children. In most cases this does not happen. This bug has been fixed, and will go away in R4. ---------------------------------------------------------------- From the did you know department. If you manage a child of a realized parent the child is automatically realized for you. So using XtCreateManagedWidget() passing a parent that is already realized is effectively using XtCreateManagedAndRealizedWidget(). ---------------------------------------------------------------- Chris D. Peterson MIT X Consortium Net: kit@expo.lcs.mit.edu Phone: (617) 253 - 9608 Address: MIT - Room NE43-213