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Re: PATCH: alignment bug in gcc i386 crtfastmath.c

On Sat, Mar 18, 2006 at 11:45:49AM -0500, Andrew Pinski wrote:
> 
> On Mar 18, 2006, at 11:43 AM, Lu, Hongjiu wrote:
> 
> >Can you try this patch?
> >
> >Since __attribute__ ((aligned (XX))) doesn't work for stack variables,
> >is there a gcc option to warn it?
> 
> Actually that is not true, it does work in general except when the stack
> is required only to be not 16byte aligned.
> I know on powerpc-darwin, it works for sure since there it is required 
> to
> be 16byte aligned.

I seem to remember that gcc doesn't do stack alignment adjustment and
assumes the OS to set it up correctly. I can get segfault on Linux/ia32
with -Os in crtfastmath.c.


H.J.
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