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s390/purgatory: Add -Wno-default-const-init-unsafe to KBUILD_CFLAGS

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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>
This commit is contained in:
Heiko Carstens 2025-12-12 16:47:07 +01:00
parent 5ba35a6c13
commit b4780fe4dd
1 changed files with 1 additions and 0 deletions
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arch/s390/purgatory/Makefile
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@ -23,6 +23,7 @@ KBUILD_CFLAGS += -D__DISABLE_EXPORTS
KBUILD_CFLAGS += $(CLANG_FLAGS)
KBUILD_CFLAGS += $(if $(CONFIG_CC_IS_CLANG),-Wno-microsoft-anon-tag)
KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
KBUILD_CFLAGS += $(call cc-option, -Wno-default-const-init-unsafe)
KBUILD_AFLAGS := $(filter-out -DCC_USING_EXPOLINE,$(KBUILD_AFLAGS))
KBUILD_AFLAGS += -D__DISABLE_EXPORTS