Comment # 9
on bug 95026
from Ilia Mirkin
(In reply to Christoph Haag from comment #8) > Looks like it's the only one: Indeed it is. > 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; > Very weird. But weird things happen with -O2 > Googling a bit sounds like it's a stack overflow: > http://stackoverflow.com/a/10501490 > 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: 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?
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