tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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s390/purgatory: Add -Wno-default-const-init-unsafe to KBUILD_CFLAGS

Add -Wno-default-const-init-unsafe to purgatory KBUILD_CFLAGS, similar
to scripts/Makefile.extrawarn, since clang generates warnings for the
dummy variable in typecheck():

CC arch/s390/purgatory/purgatory.o
arch/s390/include/asm/ptrace.h:221:9: warning: default initialization of an object of type 'typeof (regs->psw)' (aka 'const psw_t') leaves the object uninitialized [-Wdefault-const-init-var-unsafe]
221 | return psw_bits(regs->psw).pstate;
| ^
arch/s390/include/asm/ptrace.h:98:2: note: expanded from macro 'psw_bits'
98 | typecheck(psw_t, __psw); \
| ^
include/linux/typecheck.h:11:12: note: expanded from macro 'typecheck'
11 | typeof(x) __dummy2; \
| ^

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

Heiko Carstens b4780fe4 5ba35a6c

+1
+1
arch/s390/purgatory/Makefile
··· 23 23 KBUILD_CFLAGS += $(CLANG_FLAGS) 24 24 KBUILD_CFLAGS += $(if $(CONFIG_CC_IS_CLANG),-Wno-microsoft-anon-tag) 25 25 KBUILD_CFLAGS += $(call cc-option,-fno-PIE) 26 + KBUILD_CFLAGS += $(call cc-option, -Wno-default-const-init-unsafe) 26 27 KBUILD_AFLAGS := $(filter-out -DCC_USING_EXPOLINE,$(KBUILD_AFLAGS)) 27 28 KBUILD_AFLAGS += -D__DISABLE_EXPORTS 28 29