xcalloc called from signal handler

[Bernardo Innocenti]

Matthieu Herrb wrote:

> Unfortunalty the xserver 1.4 new Xinput code calls xcalloc() in
> functions that are called by the SIGIO handler. This has been identified
> as the cause of many X server segfaults on OpenBSD, and will probably
> also cause random problems on other systems.

I've observed such problems on Linux too, when you try to quit the X server
through SIGINT.


+ /* Preallocate xEvent store */
+ if (!xf86Events)
+ 	xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
+ if (!xf86Events)
+ 	FatalError("Couldn't allocate event store\n"); 

The error message is never going to show up because xcalloc() is
supposed to automatically abort() on failure.

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 |___|   Bernardo Innocenti - http://www.codewiz.org/
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