[Bug 66515] X is crashing with segmentation fault

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66515

--- Comment #4 from Bryce Harrington <b.harrington at samsung.com> ---
xTrapezoidValid() is:

#define xTrapezoidValid(t)  ((t)->left.p1.y != (t)->left.p2.y && \
                             (t)->right.p1.y != (t)->right.p2.y && \
                             (int) ((t)->bottom - (t)->top) > 0)

Maybe try printing out traps when it's in a crashed state?  (Doing a 'bt full'
after a crash would gather values of other variables that might be of interest
too.)

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