[Bug target/27537] XMM alignment fault when compiling for i386 with -Os

vda dot linux at googlemail dot com gcc-bugzilla@gcc.gnu.org
Mon Jul 23 00:48:00 GMT 2007



------- Comment #16 from vda dot linux at googlemail dot com  2007-07-23 00:48 -------
You have it reversed here:

"8. Stack alignment is already implemented in Gcc and existing code relies on
it."

No, stack alignment is _not_ in current de-facto i386 Linux ABI and there are
tons of existing object code which will call new shiny 4.2.x compiled SSE code
without aligning stack first. kaboom.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27537



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