From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21056 invoked by alias); 6 Jan 2010 12:26:55 -0000 Received: (qmail 21003 invoked by uid 48); 6 Jan 2010 12:26:44 -0000 Date: Wed, 06 Jan 2010 12:26:00 -0000 Message-ID: <20100106122644.21002.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug target/42509] [4.5 Regression] bootstrap failure in stage3 (integer overflow in preprocessor expression) In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "ramana 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: 2010-01/txt/msg00632.txt.bz2 ------- Comment #3 from ramana at gcc dot gnu dot org 2010-01-06 12:26 ------- [I don't see the first build breakage with libiberty but the second problem with "integer overflow in expressions"] . I am trying a full checking build on a board but that's taking some time to complete ! With some more digging , the problem appears to be with miscompiling _cpp_parse_expr in libcpp/expr.o in stage2. By recompiling expr.o with -O1 and recreating the stage2 compiler the bootstrap proceeded further without the error message. The other work around was to turn off inlining for the "reduce" function in the libcpp/expr.c and then things seemed to work better. Looks like a miscompiled stage2 compiler. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42509