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 544083858D35; Wed, 21 Jun 2023 04:28:18 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 544083858D35
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1687321698;
	bh=rUVH1bgEH0m4gHUkjcuZVgBxkik3k/BnlfSfb3/BByk=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=oWnVxcPNaQo5AZJFX0x6JZYILP6t7OXHkqoXHmG7pC2S6sw5UFSlZyckQaayuT4gj
	 q4Ip8rKpgmBLXIl2ZCGWLcGZ2yfESmR85aYKxRKP8HBXjBr57pWeS7MeH0tD9usc93
	 9CgXhEeG8lU0fRNnekmeTPfwO7jHNcough38L4kc=
From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/80776] -Wformat-overflow false positive for
 %d on integer bounded by __builtin_unreachable
Date: Wed, 21 Jun 2023 04:28:17 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 7.1.0
X-Bugzilla-Keywords: diagnostic, missed-optimization
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 13.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: target_milestone
Message-ID: <bug-80776-4-OexteLBZR4@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-80776-4@http.gcc.gnu.org/bugzilla/>
References: <bug-80776-4@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=3D80776

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |13.0

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #7)
> Reconfirming that test case in comment #2 still triggers the warning in G=
CC
> 10.  The dump shows that the warning thinks the fifth directive (%02d)
> generates between 2 and 10 bytes of output.  The symptoms feel similar to
> pr94021 but I haven't looked into whether they underlying root causes are
> related.

That testcase looks to be fixed in GCC 13:
/app/example.cpp:13: __builtin_sprintf: objsize =3D 15, fmtstr =3D
"%04d%02d%02d%02d%02d%02d"
  Directive 1 at offset 0: "%04d"
    Result: 4, 4, 4, 4 (4, 4, 4, 4)
  Directive 2 at offset 4: "%02d"
    Result: 2, 2, 2, 2 (6, 6, 6, 6)
  Directive 3 at offset 8: "%02d"
    Result: 2, 2, 2, 2 (8, 8, 8, 8)
  Directive 4 at offset 12: "%02d"
    Result: 2, 2, 2, 2 (10, 10, 10, 10)
  Directive 5 at offset 16: "%02d"
    Result: 2, 2, 2, 2 (12, 12, 12, 12)
  Directive 6 at offset 20: "%02d"
    Result: 2, 2, 2, 2 (14, 14, 14, 14)
  Directive 7 at offset 24: "", length =3D 1
  Substituting 14 for return value.



GCC 13:
  # RANGE [irange] int [-999, 9999]
  intD.6 a_14(D) =3D aD.2739;
  # RANGE [irange] int [1, 12] NONZERO 0xf
  intD.6 b_15(D) =3D bD.2740;
  # RANGE [irange] int [1, 31] NONZERO 0x1f
  intD.6 c_16(D) =3D cD.2741;
  # RANGE [irange] int [0, 23] NONZERO 0x1f
  intD.6 d_17(D) =3D dD.2742;
  # RANGE [irange] int [0, 59] NONZERO 0x3f
  intD.6 e_18(D) =3D eD.2743;
  # RANGE [irange] int [0, 60] NONZERO 0x3f
  intD.6 f_19(D) =3D fD.2744;


GCC 12:

  # RANGE [-999, 9999]
  intD.6 a_14(D) =3D aD.1979;
  # RANGE [1, 12] NONZERO 15
  intD.6 b_15(D) =3D bD.1980;
  # RANGE [1, 31] NONZERO 31
  intD.6 c_16(D) =3D cD.1981;
  # RANGE [0, 23] NONZERO 31
  intD.6 d_17(D) =3D dD.1982;
  # RANGE [0, 2147483647] NONZERO 2147483647
  intD.6 e_18(D) =3D eD.1983;
  # RANGE [0, 2147483647] NONZERO 2147483647
  intD.6 f_19(D) =3D fD.1984;


So yes this has been fixed for GCC 13.=