From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 529A63857827; Thu, 28 Oct 2021 13:49:40 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 529A63857827 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/57029] GCC doesn't set the inexact flag on inexact compile-time int-to-float conversion Date: Thu, 28 Oct 2021 13:49:40 +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: 4.9.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth 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: In-Reply-To: References: 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 28 Oct 2021 13:49:40 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D57029 --- Comment #4 from Richard Biener --- PR84407 was related which was about rounding modes and int-to-float convers= ion which means the testcase in this bug should now also be fixed if you supply -frounding-math which is documented as to determine the default of #pragma STDC FENV_ACCESS when the latter is implemented. But yes, -ftrapping-math is not enough to preserve the conversions from bei= ng constant folded (and thus the exception being lost). Not sure if separate control of this is really desirable.=