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From: "sjames at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/113208] [14 Regression] lto1: error: Alias and target's
 comdat groups differs
Date: Mon, 18 Mar 2024 07:45:42 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113208

--- Comment #3 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to Matthias Klose from comment #0)
> seen with trunk 20240101, building the poedit package with -flto.
>=20
> hints where to start the reduction are appreciated.
>=20

First, take the link command and see if you can prune any objects and still=
 get
the ICE (you can automate this with cvise but it's often not worth botherin=
g,
but see https://wiki.gentoo.org/wiki/GCC_ICE_reporting_guide#LTO_example fo=
r an
example)

Once you identify the relevant objects, check if any of them are archives, =
and
expand them with e.g. 'ar x', replacing them in the link line.

You can then try to replace them with preprocessed versions and LTO those, =
and
see if it still fails.=