From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id 392E63858C50; Tue, 21 Feb 2023 13:13:41 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 392E63858C50
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1676985221;
	bh=xpyAf7br08Gbs8LJG4unT54Youu6nwjIg1TK/yjpzoY=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=kdm+tR38t3nE8yXz67UEr5IjWcuTUjg+Tc0BSi4txgvQn4eOJ3j9r/5RCzxusZCy0
	 cg0TioHB/GQnhWxni7KRHMGhoYwUBlqzsX4ulQK27wGiPrC2u6ILuKXSKzQ+pGBkiA
	 tFs4Cj2SuARv8PVSU6izd2Rn5GutSTDDoAM6wz8s=
From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/108375] [10/11/12 Regression] Some variably modified types
 not detected as such
Date: Tue, 21 Feb 2023 13:13:39 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: accepts-invalid
X-Bugzilla-Severity: normal
X-Bugzilla-Who: rguenth at gcc dot gnu.org
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P4
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 10.5
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: cf_known_to_work priority short_desc
Message-ID: <bug-108375-4-vdMD6oZ0YG@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-108375-4@http.gcc.gnu.org/bugzilla/>
References: <bug-108375-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108375

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |13.0
           Priority|P3                          |P4
            Summary|[10/11/12/13 Regression]    |[10/11/12 Regression] Some
                   |Some variably modified      |variably modified types not
                   |types not detected as such  |detected as such

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
I assume this is now fixed for C on trunk.  Since langhooks are a no-go when
doing LTO it would be nice to have this bit in the middle-end - it should be
possible to set it when laying out the type via the langhook.

Of course what the C frontend calls "variably modified" (and the reasons it
tests that) might not be the same as what the middle-end thinks (and why
_it_ tests for it).=