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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/92860] [8/9/10/11 regression] Global flags
 affected by -O settings are clobbered by optimize attribute
Date: Wed, 24 Jun 2020 08:42:58 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D92860

--- Comment #28 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
> Confirmation sought that the stack backtrace I provided shows
> that the problem is a bug in the pre-processor.

No, the problem is in C parser.

>=20
> If so, -E isn't going to help.

Please attach it.=