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 2B8543858C60; Tue, 26 Oct 2021 15:17:51 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2B8543858C60
From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/102440] Uinteger Opt/Param but the underlying type is
 signed
Date: Tue, 26 Oct 2021 15:17:50 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: other
X-Bugzilla-Version: 12.0
X-Bugzilla-Keywords: internal-improvement
X-Bugzilla-Severity: enhancement
X-Bugzilla-Who: marxin at gcc dot gnu.org
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-102440-4-gYg7BHYKln@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-102440-4@http.gcc.gnu.org/bugzilla/>
References: <bug-102440-4@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
X-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Tue, 26 Oct 2021 15:17:51 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102440

--- Comment #8 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #6)
> (In reply to Martin Li=C5=A1ka from comment #5)
> > All right, so the meaning of the UInteger type is actually that users c=
an't
> > set the flag/param to a negative value:
> >=20
> > $ gcc -fabi-version=3D-3 a.c
> > gcc: error: argument to '-fabi-version=3D' should be a non-negative int=
eger
>=20
> That doesn't contradict using it with an "unsigned int".

Yes.

>=20
> > Plus there are very many flags that are initialized to -1 with Init(-1)=
. The
> > special value is used for distinguishing between a set value and the de=
fault
> > one.
>=20
> That doesn't contradict using it with an "unsigned int".

Yes.

>=20
> > So the name is unfortunate, but I don't see what can we do about it?
>=20
> We could make the "UInteger" type mean it is implemented with an "unsigned
> int"
> C type (or some other unsigned integer type).

This would lead to the following list of -Wsign-compare warnings:

/home/marxin/Programming/gcc/gcc/c-family/c-opts.c:934:27: warning: compari=
son
of integer expressions of different signedness: =E2=80=98unsigned int=E2=80=
=99 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/c-family/c-opts.c:988:57: warning: compari=
son
of integer expressions of different signedness: =E2=80=98unsigned int=E2=80=
=99 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/c-family/c-opts.c:990:36: warning: compari=
son
of integer expressions of different signedness: =E2=80=98unsigned int=E2=80=
=99 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/c-family/c-opts.c:992:62: warning: compari=
son
of integer expressions of different signedness: =E2=80=98unsigned int=E2=80=
=99 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/auto-profile.c:1631:23: warning: compariso=
n of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cfgcleanup.c:2012:15: warning: comparison =
of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cfgexpand.c:6805:7: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/combine.c:13151:36: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cse.c:6315:30: warning: comparison of inte=
ger
expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=80=98uns=
igned int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cse.c:6493:30: warning: comparison of inte=
ger
expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=80=98uns=
igned int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cselib.c:2507:24: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/emit-rtl.c:2731:29: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/emit-rtl.c:3403:26: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/emit-rtl.c:4011:26: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/flags.h:111:64: warning: comparison of int=
eger
expressions of different signedness: =E2=80=98unsigned int=E2=80=99 and =E2=
=80=98int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/fold-const.c:6030:42: warning: comparison =
of
integer expressions of different signedness: =E2=80=98unsigned int=E2=80=99=
 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/fold-const.c:9670:42: warning: comparison =
of
integer expressions of different signedness: =E2=80=98unsigned int=E2=80=99=
 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/fold-const.c:14686:24: warning: comparison=
 of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/fold-const.c:15346:24: warning: comparison=
 of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/gcse.c:801:20: warning: comparison of inte=
ger
expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=80=98uns=
igned int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/gcse.c:1846:43: warning: comparison of int=
eger
expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=80=98uns=
igned int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/gimple-loop-interchange.cc:369:23: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/gimple-loop-interchange.cc:2034:36: warnin=
g:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/gimple-range-cache.cc:437:42: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/gimple-range-gori.cc:348:31: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/gimple-ssa-split-paths.c:413:7: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/haifa-sched.c:5160:47: warning: comparison=
 of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/haifa-sched.c:5164:41: warning: comparison=
 of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/haifa-sched.c:6573:40: warning: comparison=
 of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ifcvt.c:3946:9: warning: comparison of int=
eger
expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=80=98uns=
igned int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ipa-cp.c:2066:45: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ipa-cp.c:1942:43: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ipa-cp.c:1942:43: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ipa-inline.c:187:18: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ipa-inline.c:603:22: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ipa-inline.c:732:34: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ipa-inline.c:923:18: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ipa-inline.c:943:26: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ipa-inline.c:1783:17: warning: comparison =
of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ipa-inline.c:3022:25: warning: comparison =
of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ipa-inline.c:3042:26: warning: comparison =
of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ipa-modref.c:1500:36: warning: comparison =
of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ipa-modref.c:1671:13: warning: comparison =
of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ipa-prop.c:1250:17: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/ira-build.c:2254:17: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/loop-invariant.c:1493:15: warning: compari=
son
of integer expressions of different signedness: =E2=80=98unsigned int=E2=80=
=99 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/loop-unroll.c:1816:37: warning: comparison=
 of
integer expressions of different signedness: =E2=80=98unsigned int=E2=80=99=
 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/lra-constraints.c:6911:56: warning: compar=
ison
of integer expressions of different signedness: =E2=80=98int=E2=80=99 and =
=E2=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/system.h:395:23: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/modulo-sched.c:1657:27: warning: compariso=
n of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
options-save.c:11902:10: warning: comparison of integer expressions of
different signedness: =E2=80=98int=E2=80=99 and =E2=80=98unsigned int=E2=80=
=99 [-Wsign-compare]
options-save.c:11927:10: warning: comparison of integer expressions of
different signedness: =E2=80=98int=E2=80=99 and =E2=80=98unsigned int=E2=80=
=99 [-Wsign-compare]
options-save.c:12081:10: warning: comparison of integer expressions of
different signedness: =E2=80=98int=E2=80=99 and =E2=80=98unsigned int=E2=80=
=99 [-Wsign-compare]
options-save.c:12877:10: warning: comparison of integer expressions of
different signedness: =E2=80=98int=E2=80=99 and =E2=80=98unsigned int=E2=80=
=99 [-Wsign-compare]
options-save.c:12896:10: warning: comparison of integer expressions of
different signedness: =E2=80=98int=E2=80=99 and =E2=80=98unsigned int=E2=80=
=99 [-Wsign-compare]
options-save.c:13013:10: warning: comparison of integer expressions of
different signedness: =E2=80=98int=E2=80=99 and =E2=80=98unsigned int=E2=80=
=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/predict.c:447:8: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/predict.c:449:11: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/reload.c:6731:18: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/sched-rgn.c:571:21: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/sched-rgn.c:572:26: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/sched-deps.c:2483:15: warning: comparison =
of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/sched-deps.c:2685:17: warning: comparison =
of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/sched-deps.c:3210:41: warning: comparison =
of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/sched-deps.c:3211:48: warning: comparison =
of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/sched-rgn.c:2226:20: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/sched-deps.c:3667:44: warning: comparison =
of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/sched-rgn.c:3188:23: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/sel-sched-ir.c:6024:26: warning: compariso=
n of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/sel-sched.c:3456:11: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/sanopt.c:1307:26: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-chrec.c:335:25: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-chrec.c:337:27: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-data-ref.c:5710:7: warning: compariso=
n of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-inline.c:1842:15: warning: comparison=
 of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-scalar-evolution.c:1151:17: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-scalar-evolution.c:2625:19: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-ifcombine.c:569:50: warning:
comparison of integer expressions of different signedness: =E2=80=98unsigne=
d int=E2=80=99 and
=E2=80=98int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-dse.c:699:17: warning: comparison=
 of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-dse.c:810:21: warning: comparison=
 of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-loop-ivcanon.c:863:20: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-loop-ivcanon.c:1069:7: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-loop-ivcanon.c:1504:25: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-loop-split.c:1424:52: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-loop-unswitch.c:324:22: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-loop-unswitch.c:353:20: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-loop-prefetch.c:1826:25: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-loop-prefetch.c:1863:30: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-strlen.c:706:18: warning: compari=
son
of integer expressions of different signedness: =E2=80=98int=E2=80=99 and =
=E2=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-strlen.c:735:18: warning: compari=
son
of integer expressions of different signedness: =E2=80=98int=E2=80=99 and =
=E2=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-threadbackward.c:776:19: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/tree-ssa-threadedge.c:268:15: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/var-tracking.c:5912:20: warning: compariso=
n of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/var-tracking.c:8438:32: warning: compariso=
n of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/analyzer/analysis-plan.cc:133:7: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/analyzer/program-point.cc:440:13: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/analyzer/engine.cc:2434:7: warning: compar=
ison
of integer expressions of different signedness: =E2=80=98int=E2=80=99 and =
=E2=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/analyzer/engine.cc:3129:11: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cp/constraint.cc:3746:42: warning: compari=
son
of integer expressions of different signedness: =E2=80=98int=E2=80=99 and =
=E2=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cp/constexpr.c:1721:11: warning: compariso=
n of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cp/constexpr.c:2689:24: warning: compariso=
n of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cp/constexpr.c:5996:19: warning: compariso=
n of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cp/decl.c:4587:29: warning: comparison of
integer expressions of different signedness: =E2=80=98unsigned int=E2=80=99=
 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cp/decl.c:4762:41: warning: comparison of
integer expressions of different signedness: =E2=80=98unsigned int=E2=80=99=
 and =E2=80=98const int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cp/decl.c:4773:37: warning: comparison of
integer expressions of different signedness: =E2=80=98unsigned int=E2=80=99=
 and =E2=80=98const int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cp/decl.c:4779:42: warning: comparison of
integer expressions of different signedness: =E2=80=98unsigned int=E2=80=99=
 and =E2=80=98const int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cp/decl.c:4783:44: warning: comparison of
integer expressions of different signedness: =E2=80=98unsigned int=E2=80=99=
 and =E2=80=98const int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cp/decl.c:4791:37: warning: comparison of
integer expressions of different signedness: =E2=80=98unsigned int=E2=80=99=
 and =E2=80=98const int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cp/error.c:3705:18: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/cp/mangle.c:4132:39: warning: comparison of
integer expressions of different signedness: =E2=80=98unsigned int=E2=80=99=
 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/flags.h:108:46: warning: comparison of int=
eger
expressions of different signedness: =E2=80=98unsigned int=E2=80=99 and =E2=
=80=98int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/flags.h:108:46: warning: comparison of int=
eger
expressions of different signedness: =E2=80=98unsigned int=E2=80=99 and =E2=
=80=98int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/fortran/expr.c:1710:17: warning: compariso=
n of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/fortran/options.c:291:58: warning: compari=
son
of integer expressions of different signedness: =E2=80=98unsigned int=E2=80=
=99 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/fortran/options.c:420:50: warning: compari=
son
of integer expressions of different signedness: =E2=80=98unsigned int=E2=80=
=99 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/fortran/options.c:430:36: warning: compari=
son
of integer expressions of different signedness: =E2=80=98unsigned int=E2=80=
=99 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/fortran/options.c:433:36: warning: compari=
son
of integer expressions of different signedness: =E2=80=98unsigned int=E2=80=
=99 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/fortran/options.c:443:31: warning: compari=
son
of integer expressions of different signedness: =E2=80=98unsigned int=E2=80=
=99 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/fortran/options.c:455:31: warning: compari=
son
of integer expressions of different signedness: =E2=80=98unsigned int=E2=80=
=99 and =E2=80=98int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/fortran/simplify.c:7845:13: warning:
comparison of integer expressions of different signedness: =E2=80=98int=E2=
=80=99 and =E2=80=98unsigned
int=E2=80=99 [-Wsign-compare]
/home/marxin/Programming/gcc/gcc/lto/lto.c:445:27: warning: comparison of
integer expressions of different signedness: =E2=80=98int=E2=80=99 and =E2=
=80=98unsigned int=E2=80=99
[-Wsign-compare]
/home/marxin/Programming/gcc/gcc/lto/lto-partition.c:534:32: warning:
comparison of integer expressions of different signedness: =E2=80=98unsigne=
d int=E2=80=99 and
=E2=80=98int=E2=80=99 [-Wsign-compare]

One would need to verify/adjust all these places (plus many more for other
targets).

I'm not sure it's worth it. Unassigning myself..=