From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 32634 invoked by alias); 27 May 2010 23:34:55 -0000 Received: (qmail 32602 invoked by uid 48); 27 May 2010 23:34:44 -0000 Date: Thu, 27 May 2010 23:34:00 -0000 Message-ID: <20100527233444.32601.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug objc/44140] ObjC lto/whopr fails In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "iains at gcc dot gnu dot org" 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: 2010-05/txt/msg03085.txt.bz2 ------- Comment #9 from iains at gcc dot gnu dot org 2010-05-27 23:34 ------- using the example at #5 apollo:gcc-4-6-trunk-build$ ./gcc/xgcc -B gcc ../tests/trivial.m -flto -o t -lobjc -save-temps trivial.s:unknown:Undefined local symbol L_OBJC_CLASS_myRootObject.2084 trivial.s:unknown:Undefined local symbol L_OBJC_METACLASS_myRootObject.2083 looking at the asm with lto: L_OBJC_SYMBOLS.2087: .long 0 .long 0 .word 1 .word 0 .long L_OBJC_CLASS_myRootObject.2084 .no_dead_strip L_OBJC_METH_VAR_NAME_12.2082 .objc_meth_var_names L_OBJC_METH_VAR_NAME_12.2082: .ascii "class\0" .no_dead_strip L_OBJC_CLASS_myRootObject.2088 .objc_class .align 5 L_OBJC_CLASS_myRootObject.2088: .long L_OBJC_METACLASS_myRootObject.2083 it seems that there's a later edition of the variable which becomes the label for the table and the reference fails. similarly with metaclass table. .no_dead_strip L_OBJC_METACLASS_myRootObject.2092 .objc_meta_class .align 5 L_OBJC_METACLASS_myRootObject.2092: .long L_OBJC_CLASS_NAME_0.2080 .long 0 .long L_OBJC_CLASS_NAME_0.2080 .long 0 ==== I must confess, I haven't got much idea where to look for the problem at this juncture.. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44140