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[Bug bootstrap/45611] [4.6 regression] SIGBUS in generate_option_input_file on Solaris 2/SPARC



------- 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
> 2/SPARC
> 
> > ------- 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).

Thanks.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45611


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