From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 25959 invoked by alias); 7 Dec 2009 20:40:33 -0000 Received: (qmail 25903 invoked by uid 48); 7 Dec 2009 20:40:14 -0000 Date: Mon, 07 Dec 2009 20:40:00 -0000 Message-ID: <20091207204014.25902.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug regression/42282] regression: ICE when bootstrapping trunk with -O2 -funswitch-loops In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "matt at use dot net" 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: 2009-12/txt/msg00737.txt.bz2 ------- Comment #2 from matt at use dot net 2009-12-07 20:40 ------- Pre-processed output attached. I'm having some trouble getting it to crash consistently, but here is the valgrind output that might indicate the problem: ==26996== Conditional jump or move depends on uninitialised value(s) ==26996== at 0x70AA99: execute_rtl_store_motion (store-motion.c:271) ==26996== by 0x66A091: execute_one_pass (passes.c:1543) ==26996== by 0x66A3A4: execute_pass_list (passes.c:1598) ==26996== by 0x66A3C1: execute_pass_list (passes.c:1599) ==26996== by 0x756D84: tree_rest_of_compilation (tree-optimize.c:413) ==26996== by 0x8ACC7A: cgraph_expand_function (cgraphunit.c:1495) ==26996== by 0x8AE9C3: cgraph_optimize (cgraphunit.c:1574) ==26996== by 0x8AECE4: cgraph_finalize_compilation_unit (cgraphunit.c:1083) ==26996== by 0x41DA4A: c_write_global_declarations (c-decl.c:9489) ==26996== by 0x70E683: toplev_main (toplev.c:1061) ==26996== by 0x6561ABC: (below main) (libc-start.c:220) ==26996== Uninitialised value was created by a heap allocation ==26996== at 0x4C25153: malloc (vg_replace_malloc.c:195) ==26996== by 0xB93B4D: xmalloc (xmalloc.c:147) ==26996== by 0x70A932: execute_rtl_store_motion (store-motion.c:1066) ==26996== by 0x66A091: execute_one_pass (passes.c:1543) ==26996== by 0x66A3A4: execute_pass_list (passes.c:1598) ==26996== by 0x66A3C1: execute_pass_list (passes.c:1599) ==26996== by 0x756D84: tree_rest_of_compilation (tree-optimize.c:413) ==26996== by 0x8ACC7A: cgraph_expand_function (cgraphunit.c:1495) ==26996== by 0x8AE9C3: cgraph_optimize (cgraphunit.c:1574) ==26996== by 0x8AECE4: cgraph_finalize_compilation_unit (cgraphunit.c:1083) ==26996== by 0x41DA4A: c_write_global_declarations (c-decl.c:9489) ==26996== by 0x70E683: toplev_main (toplev.c:1061) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42282