------- Comment #6 from rguenther at suse dot de 2010-09-10 15:51 -------
Subject: Re: [4.6 regression] SIGBUS in generate_option_input_file
on Solaris 2/SPARC
On Fri, 10 Sep 2010, ro at CeBiTec dot Uni-Bielefeld dot DE wrote:
> ------- Comment #5 from ro at CeBiTec dot Uni-Bielefeld dot DE 2010-09-10
> 15:48 -------
> Subject: Re: [4.6 regression] SIGBUS in generate_option_input_file on Solaris
> > ------- Comment #4 from rguenth at gcc dot gnu dot org 2010-09-09 13:27
> > -------
> > I don't have access to sparc-sun-solaris2*, so I can't bootstrap it (but
> > at most build a cross cc1).
> Not even sparc-linux? I very much doubt the bug is Solaris-specific.
No, not even sparc-linux.
> > So please attach a testcase (easiest is probably in a non-bootstrapped
> > tree run make check and pick a simple one that fails from the C testsuite).
> Ok, I'll try to find one.
> > Is sparc-sun-solaris2* a STRICT_ALIGNMENT target? What's the clr
> > instruction?
> > Is it a store or a load?
> Yes, cf. sparc.h.
> clr and clrx store 0 (4 or 8 bytes) at the target address, requiring
> natural alignment (which fails with your patch for the clrx case).