From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id B7AA8385E010; Thu, 16 Jun 2022 12:54:09 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B7AA8385E010 From: "dmalcolm at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug analyzer/105900] RFE: -fanalyzer could check malloc sizes when casting the result to a pointer Date: Thu, 16 Jun 2022 12:54:09 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: analyzer X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: dmalcolm at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: tlange 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, 16 Jun 2022 12:54:09 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105900 --- Comment #1 from David Malcolm --- See https://cwe.mitre.org/data/definitions/131.html e.g. example 5. See also: =20 https://clang.llvm.org/docs/analyzer/checkers.html#alpha-security-mallocove= rflow-c (CWE 131's example 2 has a case of this)=