From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 97ED93858D39; Fri, 31 Dec 2021 06:31:26 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 97ED93858D39 From: "shihua at iscas dot ac.cn" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/103872] New: testcase fail in gcc.dg/analyzer/pr103526.c on riscv64-unknown-elf-gcc Date: Fri, 31 Dec 2021 06:31:26 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: shihua at iscas dot ac.cn X-Bugzilla-Status: UNCONFIRMED 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: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: 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: Fri, 31 Dec 2021 06:31:26 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103872 Bug ID: 103872 Summary: testcase fail in gcc.dg/analyzer/pr103526.c on riscv64-unknown-elf-gcc Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: shihua at iscas dot ac.cn Target Milestone: --- analyzer can not properly detects the non-free'd pointer as escaping via the return value in riscv*-**-gcc riscv64-unknown-elf-gcc -S -fanalyzer -Wanalyzer-too-complex -fanalyzer-call-summaries riscv-gcc/gcc/testsuite/gcc.dg/analyzer/pr103526.c riscv-gcc/gcc/testsuite/gcc.dg/analyzer/pr103526.c: In function 'game_new': riscv-gcc/gcc/testsuite/gcc.dg/analyzer/pr103526.c:31:1: warning: leak of 'tmp.word_state' [CWE-401] [-Wanalyzer-malloc-leak] 31 | } /* { dg-bogus "leak" } */ | ^ 'game_new': events 1-7 | | 20 | if ((tmp.word_state =3D malloc(wordlen+1)) =3D=3D NULL) | | ~ ^~~~~~~~~~~~~~~~~ | | | | | | | (1) allocated here | | (2) assuming 'tmp.word_state' is non-NULL | | (3) following 'false' branch... | 21 | goto err; | 22 | if ((rval =3D malloc(sizeof(*rval))) =3D=3D NULL) | | ~ ~~~~~~~~~~~~~~~~~~~~~ | | | | | | | (4) ...to here | | (5) following 'false' branch (when 'rval' is non-NULL)... | 23 | goto err; | 24 | memcpy(rval, &tmp, sizeof(*rval)); | | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | | | | | (6) ...to here |...... | 31 | } /* { dg-bogus "leak" } */ | | ~ | | | | | (7) 'tmp.word_state' leaks here; was allocated at (1) |=