------- Comment #5 from ro at CeBiTec dot Uni-Bielefeld dot DE 2010-09-10
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.
> 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).