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Re: [PATCH][4.3] RFC - Fix PR40141, backport alias fixes around ref-all pointers, backport struct with complex argument passing (i?86, x86_64)
- From: Eric Botcazou <ebotcazou at adacore dot com>
- To: Richard Guenther <rguenther at suse dot de>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Mon, 18 May 2009 10:17:07 +0200
- Subject: Re: [PATCH][4.3] RFC - Fix PR40141, backport alias fixes around ref-all pointers, backport struct with complex argument passing (i?86, x86_64)
- References: <alpine.LNX.2.00.0905151928450.25789@zhemvz.fhfr.qr>
> This fixes PR40141, a report for the 4.3 branch that ref-all pointers
> do not work properly. This was fixed for 4.4 by me and I am not aware
> of followup issues with the fixes. On the other hand the changes are
> not minor - but getting the fallback ref-all case correct seems important.
>
> This also backports the i386 backend part of the fix for PR38151 (I can
> do without that, but then have to remove the testcase checking the
> ref-all fix for i386 varargs).
>
> Bootstrapped and tested on {x86_64,i586,ppc,ppc64,s390,s390x}-linux.
> I have put this into our openSUSE 4.3 package. How do people feel
> with this kind of non-trivial changes late in the 4.3 series?
This indeed seems a little risky at this point. Does it show up only with
__attribute__((may_alias))?
--
Eric Botcazou