From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 8F9EC3858C53; Mon, 7 Nov 2022 13:28:49 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 8F9EC3858C53 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1667827729; bh=+Kc/eqoX/hcpGzymLY5FqEa7j/Ljl2/jCyxgjkR6n1g=; h=From:To:Subject:Date:From; b=jL8+VUhdhpuJYLbXkHJSnHH5hvUvc7LC9luJj9nnsu9HuoiGVw8vs8NE6IxArBDYz TrhBOVG8Vjx3AjKH66+Unk+WBX+VVFEfPmBdNsmx3AjcNYjOu/YiNOFGGwnIjZyFyn Qv+aas9CYhEavFOIQmPMEaEGue9ac3fS+ikKv6h0= From: "nik_1357 at mail dot ru" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/107554] New: Segmentation fault during GIMPLE pass: strlen (tree-ssa-strlen.cc:4772) Date: Mon, 07 Nov 2022 13:28:47 +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: 13.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: nik_1357 at mail dot ru 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 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107554 Bug ID: 107554 Summary: Segmentation fault during GIMPLE pass: strlen (tree-ssa-strlen.cc:4772) Product: gcc Version: 13.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: nik_1357 at mail dot ru Target Milestone: --- Hello. Test which causes the bug: #include #define ELEMS 0x40000000 int a[ELEMS]; int b[ELEMS]; int main() { memcpy(a, b, ELEMS*sizeof(int)); } Command: gcc -O1 -foptimize-strlen test.c -c Error message: during GIMPLE pass: strlen memcpy_segfault.c: In function =E2=80=98main=E2=80=99: memcpy_segfault.c:8:5: internal compiler error: Segmentation fault 8 | int main() | ^~~~ 0xb2636f crash_signal ../../../gcc/gcc-10.4.0/gcc/toplev.c:328 0x7f3f359e351f ??? ./signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0 0xcaaaed count_nonzero_bytes ../../../gcc/gcc-10.4.0/gcc/tree-ssa-strlen.c:4820 0xcad456 count_nonzero_bytes ../../../gcc/gcc-10.4.0/gcc/tree-ssa-strlen.c:4963 0xcad456 handle_store ../../../gcc/gcc-10.4.0/gcc/tree-ssa-strlen.c:5040 0xcad456 check_and_optimize_stmt ../../../gcc/gcc-10.4.0/gcc/tree-ssa-strlen.c:5687 0xcad456 strlen_dom_walker::before_dom_children(basic_block_def*) ../../../gcc/gcc-10.4.0/gcc/tree-ssa-strlen.c:5864 0x12d45d7 dom_walker::walk(basic_block_def*) ../../../gcc/gcc-10.4.0/gcc/domwalk.c:309 0xca404e printf_strlen_execute ../../../gcc/gcc-10.4.0/gcc/tree-ssa-strlen.c:5930 Bug is present in: 10, 11, 12 and current master. 9 is not affected by it.=