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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/66038] [5 regression] (stage 2) build/genmatch segfaults in operand::gen_transform (gcc/hash-table.h:223)
Date: Wed, 20 May 2015 07:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66038

--- Comment #13 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 20 May 2015, jakub at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66038
> 
> Jakub Jelinek <jakub at gcc dot gnu.org> changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |jakub at gcc dot gnu.org
> 
> --- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> hashval_t should be unsigned int?  Is it some other type on your host, or is
> CHAR_BIT bigger than 8, or do you have 64-bit unsigned int?

Yeah, it looks odd.  All hosts should have uint64_t nowadays, so even
before honzas patch we _always_ should have gone the mul_mod path.

Can you attach pre-processed source with the revision you bisected
reverted?  (pre-processed source of genmatch.c, that is?)

Might be that bconfig.h/system.h combo for your host makes the difference
somehow.