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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Alien Isolation segfault after initial loading screen/video"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95026#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Alien Isolation segfault after initial loading screen/video"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95026">bug 95026</a>
from <span class="vcard"><a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> <span class="fn">Ilia Mirkin</span></a>
</span></b>
<pre>(In reply to Christoph Haag from <a href="show_bug.cgi?id=95026#c8">comment #8</a>)
<span class="quote">> Looks like it's the only one:</span >
Indeed it is.
<span class="quote">> I'm not exactly an expert at debugging C, but it's kinda weird that it's
> segfaulting on the opening brace of
>
> void
> glsl_to_tgsi_visitor::visit(ir_expression *ir)
> {
> unsigned int operand;
> </span >
Very weird. But weird things happen with -O2
<span class="quote">> Googling a bit sounds like it's a stack overflow:
> <a href="http://stackoverflow.com/a/10501490">http://stackoverflow.com/a/10501490</a>
> With "disas" gdb actually allows me to see the assembler instructions before
> the crash. Yay.
>
> 0x00007fffe979cb70 <+32>: sub $0x1000,%rsp
> => 0x00007fffe979cb77 <+39>: orq $0x0,(%rsp)
>
> but not sure why:</span >
Right, so this allocates 4K of stack, which isn't some incredibly large amount.
Normally stack just gets auto-paged in, perhaps memory is running out...
somehow. I don't really know enough about this :(
What is the value of %rsp? (i registers)
What compiler are you building with?</pre>
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