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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/114930] [14/15 regression] ICE in fld_incomplete_type_of
 when building libwebp with -std=c23 -flto
Date: Tue, 21 May 2024 08:50:07 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114930

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hubicka at gcc dot gnu.org

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Likely an issue in fld_incomplete_type_of with how C23 lays out types and/or
how we set up their canonical types.  What we try to do for LTO is to
turn pointer types to pointer types to pointer to "incomplete" type variant=
s,
thus for arrays to [] and for structs to structs with no fields.

Somebody needs to see how it goes wrong, the assert makes sense and is requ=
ired
for correctness.=