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Re: PR 6212
On Mon, May 06, 2002 at 03:56:52PM -0700, Mark Mitchell wrote:
> For now, highest_pow2_factor is only used as an argument to
> offset_address, and in offset_address, there's already a "MIN"; the
> offset address is never more aligned than the original address.
> Does that help?
I don't think so. The following will return 64-bit alignment for the memory.
This particular example doesn't fail on Alpha at the moment, since the Alpha
backend doesn't look at MEM_ALIGN for this case. But there _is_ stuff that
uses MEM_ALIGN; it's just a matter of trying all the combinations to find
something that fails.
void foo(struct S *s, int *p, int *q)
s->y[(char *)q - (char *)p] = 0;
struct S *s = alloca(100);
foo(&s, (int *)&c, (int *)&c);