From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id CC8AF3857C4A; Sat, 15 Aug 2020 07:20:45 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org CC8AF3857C4A From: "vries at gcc dot gnu.org" To: gdb-prs@sourceware.org Subject: [Bug gdb/25350] gdb internal-error with assertion status failed Date: Sat, 15 Aug 2020 07:20:45 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gdb X-Bugzilla-Component: gdb X-Bugzilla-Version: HEAD X-Bugzilla-Keywords: X-Bugzilla-Severity: critical X-Bugzilla-Who: vries at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at sourceware dot 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://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: gdb-prs@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb-prs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 15 Aug 2020 07:20:45 -0000 https://sourceware.org/bugzilla/show_bug.cgi?id=3D25350 --- Comment #3 from Tom de Vries --- The "break *eh2+0x7e" sets a breakpoint at the last insn of eh2. We can get that address using: ... $ address=3D$(gdb -batch a.out -ex "disassemble eh2" ' \ | tail -n 2 \ | head -n 1 \ | awk '{print $1}') ... and then use that variable to reproduce without hard-coding an offset: ... $ gdb -batch a.out -ex "b *$address" -ex r ... This way, we can also reproduce without -fsanitize=3Dundefined: ... $ gcc -g small.c ... --=20 You are receiving this mail because: You are on the CC list for the bug.=