Bug#740860: zsnes is randomly frozen

[Cedric Dourneau]

Hi,

It seems there is a type conversion issue in sem_GetTicks. tv_sec is only
"long", and on i386-linux the long arithmetic makes the function return a
very large value after ~2148 seconds.
After that it appears the frame rate limiting code just keeps calling
SDL_SemPost, until it gets to MAX_INT and hangs.

You can systematically add 2140 to now.tv_sec in sem_GetTicks to reproduce
the bug without waiting 35mn.

I generated a patch using the Ubuntu (14.04) package sources, as that's
what I have, but the issue comes from one of the debian patches, and I
think it should apply cleanly.

Regards,
--
Cédric
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