From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 16208 invoked by alias); 31 Dec 2013 08:17:33 -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 Received: (qmail 16161 invoked by uid 48); 31 Dec 2013 08:17:28 -0000 From: "trippels at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/59644] [4.9 Regression] r206243 miscompiles Linux kernel Date: Tue, 31 Dec 2013 08:17:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 4.9.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: trippels at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED 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: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2013-12/txt/msg02477.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59644 --- Comment #2 from Markus Trippelsdorf --- kernel/printk/printk.o gets miscompiled. % gcc -Wp,-MD,kernel/printk/.printk.o.d -nostdinc -isystem /var/tmp/gcc_test_/usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.9.0/include -I/var/tmp/linux/arch/x86/include -Iarch/x86/include/generated -Iinclude -I/var/tmp/linux/arch/x86/include/uapi -Iarch/x86/include/generated/uapi -I/var/tmp/linux/include/uapi -Iinclude/generated/uapi -include /var/tmp/linux/include/linux/kconfig.h -D__KERNEL__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-delete-null-pointer-checks -O2 -m64 -mno-mmx -mno-sse -mpreferred-stack-boundary=3 -march=native -mno-red-zone -mcmodel=kernel -funit-at-a-time -maccumulate-outgoing-args -DCONFIG_AS_CFI=1 -DCONFIG_AS_CFI_SIGNAL_FRAME=1 -DCONFIG_AS_CFI_SECTIONS=1 -DCONFIG_AS_FXSAVEQ=1 -DCONFIG_AS_AVX=1 -DCONFIG_AS_AVX2=1 -pipe -Wno-sign-compare -fno-asynchronous-unwind-tables -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx -Wframe-larger-than=1024 -fno-stack-protector -Wno-unused-but-set-variable -fomit-frame-pointer -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -Werror=implicit-int -Werror=strict-prototypes -DCC_HAVE_ASM_GOTO -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(printk)" -D"KBUILD_MODNAME=KBUILD_STR(printk)" -c -o kernel/printk/printk.o kernel/printk/printk.c --save-temps