[Qt-interest] SIGSEGV in QPixmapCache::Clear()

Srdjan Todorovic todorovic.s at googlemail.com
Thu Oct 29 15:47:39 CET 2009


Hi,

On 29/10/2009, Josiah Bryan <jbryan at productiveconcepts.com> wrote:
> Josiah Bryan wrote:
>> Using qt from Git as of early October (qmake claims qt 4.7.0).
>> (gdb) bt
>> #0  0x00000019 in ?? ()
>> #1  0x00d72d6f in QPixmapCache::clear () at image/qpixmapcache.cpp:623
> I've still not found a way around this crashing upon exit. Anyone out
> there (Trolltech?) have any comments or ideas on this?

Some time ago I read in some Linux kernel debugging presentation, that
stack pointer values that are small offsets from 0x00000000 often
indicate some kind of de-reference into a structure member.

I might be completely wrong about this.

Maybe you can set a breakpoint to any of your code that calls
QPixmapCache::clear(), and then step through the execution/print/list
until you find the problem.

Good luck,
Srdjan



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