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From:	Tony Kelman <tony AT kelman DOT net>
To:	JonY <10walls AT gmail DOT com>, "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject:	Re: [ANNOUNCEMENT] Updated: mingw64-*-gcc-5.4.0-2 (x86/x86_64)
Date:	Thu, 18 Aug 2016 12:08:01 +0000
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> Sadly I seem to get similar-looking access violations even after rebuilding
> 5.4.0-2 from the -src cygport with the patch for GCC bug 66655 added. So
> maybe some other change is also needed to get this working, hopefully one
> that is included in GCC 6. I'll have to test a cross-compilation from
> opensuse where they already have mingw-w64 GCC 6 packaged and see if things
> are in a better shape there.

I also get a segfault when I cross-compile with GCC 6.1 from opensuse 13.2
(needs wine to run this particular bootstrap build step), so this looks
like it's something else. To be sure, could you test the small ipa-ra.tgz
test case from the top of https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66655
with your build? It runs correctly with my build where I've applied the
patch, but the larger Julia+LLVM case doesn't work. So this is something
new, and/or https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68601 wasn't
actually a duplicate of 66655. Will continue investigating.

-Tony


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