https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68759
--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- Created attachment 36945 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36945&action=edit kernel config I'm building the latest vanilla kernel tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git. The kernel config is attached. Binutils is latest trunk. (Both ld.bfd and ld.gold hit the issue, although the error messages are slightly different.) I'm also using the following kernel patch, to enable -O3 instead of the default -O2. (The rest are compare-debug related changes, that are uninteresting in the current context.) diff --git a/Makefile b/Makefile index d644f6e..0922f17 100644 --- a/Makefile +++ b/Makefile @@ -610,7 +610,7 @@ KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) else -KBUILD_CFLAGS += -O2 +KBUILD_CFLAGS += -O3 -w endif # Tell gcc to never replace conditional load with a non-conditional one @@ -700,7 +700,6 @@ KBUILD_CFLAGS += -fomit-frame-pointer endif endif -KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) ifdef CONFIG_DEBUG_INFO ifdef CONFIG_DEBUG_INFO_SPLIT diff --git a/scripts/gcc-goto.sh b/scripts/gcc-goto.sh index c9469d3..fad4c94 100755 --- a/scripts/gcc-goto.sh +++ b/scripts/gcc-goto.sh @@ -2,6 +2,8 @@ # Test for gcc 'asm goto' support # Copyright (C) 2010, Jason Baron <jba...@redhat.com> +GCC_COMPARE_DEBUG=0 + cat << "END" | $@ -x c - -c -o /dev/null >/dev/null 2>&1 && echo "y" int main(void) {
