From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 00CCA38AA278; Mon, 5 Jun 2023 15:34:13 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 00CCA38AA278 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1685979254; bh=PaTg+MgI2VQo9S8HxyDXTZ7JPxiVyVa3eNUP556zQrI=; h=From:To:Subject:Date:In-Reply-To:References:From; b=SpC0MlqS0Tf1N5sd749D34dTpT0GdJPAHnWDBsnQMj9BV66F7pkQrWgkNqCU9VCqT T4TAE1BX6UulzEsO0R4zOWDOGF3FPktKteTkVnU4oinH44Ya6BThpqCWlmfyARPAG1 48/NulCFV1XKmlOmmwVbhjxfyrofBT9cuD8k4FXI= From: "fw at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug libgcc/109712] Segmentation fault in linear_search_fdes Date: Mon, 05 Jun 2023 15:34:13 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: libgcc X-Bugzilla-Version: 13.1.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: fw at gcc dot gnu.org X-Bugzilla-Status: REOPENED 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: cc 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 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109712 Florian Weimer changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |fw at gcc dot gnu.org --- Comment #20 from Florian Weimer --- Thanks for looking into this, Thomas. I suspect it's a simple typo, which happens not to matter in many cases because both dbase and eh_frame are unu= sed: diff --git a/libgcc/unwind-dw2-fde-dip.c b/libgcc/unwind-dw2-fde-dip.c index 6223f5f18a2..b7b09d584c8 100644 --- a/libgcc/unwind-dw2-fde-dip.c +++ b/libgcc/unwind-dw2-fde-dip.c @@ -404,7 +404,7 @@ find_fde_tail (_Unwind_Ptr pc, signed value __attribute__ ((mode (SI))); memcpy (&value, p, sizeof (value)); p +=3D sizeof (value); - dbase =3D value; /* No adjustment because pcrel has base 0= . */ + eh_frame =3D value; /* No adjustment because pcrel ha= s base 0. */ } else p =3D read_encoded_value_with_base (hdr->eh_frame_ptr_enc,=