From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4144 invoked by alias); 8 Jan 2011 20:55:27 -0000 Received: (qmail 4135 invoked by uid 22791); 8 Jan 2011 20:55:27 -0000 X-SWARE-Spam-Status: No, hits=-2.9 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sat, 08 Jan 2011 20:55:22 +0000 From: "ktietz at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug debug/47209] ICE: SIGSEGV in should_emit_struct_debug (dwarf2out.c:627) with -f{no-,}emit-struct-debug-{baseonly,reduced} -g X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: debug X-Bugzilla-Keywords: ice-on-valid-code X-Bugzilla-Severity: normal X-Bugzilla-Who: ktietz at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: CC Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Date: Sat, 08 Jan 2011 21:00:00 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2011-01/txt/msg00753.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47209 Kai Tietz changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ktietz at gcc dot gnu.org --- Comment #4 from Kai Tietz 2011-01-08 20:55:20 UTC --- Well, the issue here seems to be that in should_emit_struct_debug TYPE_STUB_DECL (type) for provided type is a NULL_TREE. In next two if-statements this result is used unconditionally. I am not sure if the underlying issue is related to some other place in c++ FE (I assume so), but following patch at least avoid segfault. Index: dwarf2out.c =================================================================== --- dwarf2out.c (revision 168601) +++ dwarf2out.c (working copy) @@ -620,12 +620,14 @@ return DUMP_GSTRUCT (type, usage, criterion, generic, false, true); type_decl = TYPE_STUB_DECL (type); + if (type_decl != NULL_TREE) + { + if (criterion == DINFO_STRUCT_FILE_SYS && DECL_IN_SYSTEM_HEADER (type_decl)) + return DUMP_GSTRUCT (type, usage, criterion, generic, false, true); - if (criterion == DINFO_STRUCT_FILE_SYS && DECL_IN_SYSTEM_HEADER (type_decl)) - return DUMP_GSTRUCT (type, usage, criterion, generic, false, true); - - if (matches_main_base (DECL_SOURCE_FILE (type_decl))) - return DUMP_GSTRUCT (type, usage, criterion, generic, true, true); + if (matches_main_base (DECL_SOURCE_FILE (type_decl))) + return DUMP_GSTRUCT (type, usage, criterion, generic, true, true); + } return DUMP_GSTRUCT (type, usage, criterion, generic, false, false); }