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Date: Tue, 6 Apr 2021 12:11:07 +0200
From: Jan Hubicka <hubicka@ucw.cz>
To: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
Cc: gcc-bugs@gcc.gnu.org
Subject: Re: [Bug lto/99898] Possible LTO object incompatibility on gcc-10
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Message-ID: <20210406101107.GB17139@kam.mff.cuni.cz>
References: <bug-99898-4@http.gcc.gnu.org/bugzilla/>
 <bug-99898-4-hbsxrmeyKb@http.gcc.gnu.org/bugzilla/>
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> Any *.opt changes can break the streaming of optimization or target option
> nodes.
> And from experience with gcc plugins we have such changes ~ each month even on
> release branches.
It may make sense to add a simple test to our regular testers that
either the new revision can consume old object files or the version was
updated :)

Honza