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Date: Wed, 18 Jan 2023 16:07:12 +0100
From: Jan Hubicka <hubicka@ucw.cz>
To: Andreas Schwab <schwab@suse.de>
Cc: Jakub Jelinek <jakub@redhat.com>,
	Richard Biener <richard.guenther@gmail.com>,
	gcc-patches@gcc.gnu.org
Subject: Re: [PATCH] lto: pass through -funwind-tables and
 -fasynchronous-unwind-tables
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> No unwind tables are generated, as if -funwind-tables is ignored.  If
> LTO is disabled, everything works as expected.
I think it is because dwaf2out_do_eh_frame is called out of function
context at the end of compilation. At that time cfun is NULL
and the flag is read from global settings that are wrong.
So we need to bookkeep if we saw function that needs EH tables and not.

Honza
> 
> -- 
> Andreas Schwab, SUSE Labs, schwab@suse.de
> GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
> "And now for something completely different."