From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 5110E385802E; Wed, 31 Mar 2021 09:50:53 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 5110E385802E From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/99845] gcc8: Overloaded operator new[](size_t, const std::nothrow_t&) is seg faulting when the allocation fails Date: Wed, 31 Mar 2021 09:50:53 +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: 8.3.1 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: Wed, 31 Mar 2021 09:50:53 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99845 --- Comment #3 from Richard Biener --- The interesting thing is that doing #include struct X { ~X(){} }; int main(int argc, char **argv) { X *p =3D new (std::nothrow) X[argc]; } properly conditionalizes this store: TARGET_EXPR , (const stru= ct nothrow_t &) ¬hrow)>;;, (struct X *) D.6173 !=3D 0B ? *(sizetype *) NON_LVALUE_EXPR =3D SAVE_EXPR <(sizetype) argc>;, (struct X *) (D.= 6173 + 8); : (struct X *) D.6173;) so something in the wrapping triggers the error.=