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[build] Disable dangling pointer checking for GCC 

The dangling pointer warning introduced in GCC 12 reports false
positives that result in build failures.  In particular, storing the
address of a local code label used to record the current state of a
state machine (as done in crypto/deflate.c) is reported as an error.

There seems to be no way to mark the pointer type as being permitted
to hold such a value, so unconditionally disable the warning.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/838/head
Michael Brown 2022-12-14 01:26:03 +00:00
parent 54c4c1d403
commit b0ded89e91
1 changed files with 4 additions and 2 deletions
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6
src/Makefile.housekeeping
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@ -461,8 +461,10 @@ CFLAGS += -g
ifeq ($(CCTYPE),gcc) ifeq ($(CCTYPE),gcc)
CFLAGS += -ffreestanding CFLAGS += -ffreestanding
CFLAGS += -fcommon CFLAGS += -fcommon
CFLAGS += -Wall -W -Wformat-nonliteral -Wno-array-bounds CFLAGS += -Wall -W -Wformat-nonliteral
HOST_CFLAGS += -Wall -W -Wformat-nonliteral -Wno-array-bounds CFLAGS += -Wno-array-bounds -Wno-dangling-pointer
HOST_CFLAGS += -Wall -W -Wformat-nonliteral
HOST_CFLAGS += -Wno-array-bounds -Wno-dangling-pointer
endif endif
CFLAGS += $(WORKAROUND_CFLAGS) $(EXTRA_CFLAGS) CFLAGS += $(WORKAROUND_CFLAGS) $(EXTRA_CFLAGS)
ASFLAGS += $(WORKAROUND_ASFLAGS) $(EXTRA_ASFLAGS) ASFLAGS += $(WORKAROUND_ASFLAGS) $(EXTRA_ASFLAGS)