From 3fd84a4fc063f36855ddf2408c66e6e5d219b223 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 8 May 2020 11:35:43 +0200 Subject: parisc: use -fno-strict-aliasing for decompressor An experimental patch series of mine reworks how warnings are processed in Kbuild. A side effect is a new warning about a harmless aliasing rule violation in an inline function: In file included from include/linux/rhashtable-types.h:15:0, from include/linux/ipc.h:7, from include/uapi/linux/sem.h:5, from include/linux/sem.h:5, from include/linux/sched.h:15, from include/linux/uaccess.h:6, from arch/parisc/boot/compressed/misc.c:7: include/linux/workqueue.h: In function 'work_static': include/linux/workqueue.h:212:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] return *work_data_bits(work) & WORK_STRUCT_STATIC; Make the decompressor use -fno-strict-aliasing like the rest of the kernel for consistency, and to ensure this warning never makes it into a release. Reported-by: kbuild test robot Signed-off-by: Arnd Bergmann Signed-off-by: Helge Deller --- arch/parisc/boot/compressed/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/parisc') diff --git a/arch/parisc/boot/compressed/Makefile b/arch/parisc/boot/compressed/Makefile index 1e5879c6a752..dff453687530 100644 --- a/arch/parisc/boot/compressed/Makefile +++ b/arch/parisc/boot/compressed/Makefile @@ -16,6 +16,7 @@ targets += real2.S firmware.c KBUILD_CFLAGS := -D__KERNEL__ -O2 -DBOOTLOADER KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING +KBUILD_CFLAGS += -fno-strict-aliasing KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks -fno-builtin-printf KBUILD_CFLAGS += -fno-PIE -mno-space-regs -mdisable-fpregs -Os ifndef CONFIG_64BIT -- cgit v1.2.3