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File ipxe.b0ded89e917b48b73097d3b8b88dfa3afb264ed0.patch of Package xen (Revision 3b077056294bcb49994ea3227248b4ad)

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From: Michael Brown <mcb30@ipxe.org>
Date: Wed, 14 Dec 2022 01:26:03 +0000
Subject: b0ded89e917b48b73097d3b8b88dfa3afb264ed0

[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>
---
 src/Makefile.housekeeping | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/src/Makefile.housekeeping
+++ b/src/Makefile.housekeeping
@@ -401,26 +401,28 @@ ifdef BIN
 # INCDIRS lists the include path
 incdirs :
 	@$(ECHO) $(INCDIRS)
 
 # Common flags
 #
 CFLAGS		+= $(foreach INC,$(INCDIRS),-I$(INC))
 CFLAGS		+= -Os
 CFLAGS		+= -g
 ifeq ($(CCTYPE),gcc)
 CFLAGS		+= -ffreestanding
 CFLAGS		+= -fcommon
-CFLAGS		+= -Wall -W -Wformat-nonliteral -Wno-array-bounds
-HOST_CFLAGS	+= -Wall -W -Wformat-nonliteral -Wno-array-bounds
+CFLAGS		+= -Wall -W -Wformat-nonliteral
+CFLAGS		+= -Wno-array-bounds -Wno-dangling-pointer
+HOST_CFLAGS	+= -Wall -W -Wformat-nonliteral
+HOST_CFLAGS	+= -Wno-array-bounds -Wno-dangling-pointer
 endif
 ifeq ($(CCTYPE),icc)
 CFLAGS		+= -fno-builtin
 CFLAGS		+= -no-ip
 CFLAGS		+= -no-gcc
 CFLAGS		+= -diag-disable 111 # Unreachable code
 CFLAGS		+= -diag-disable 128 # Unreachable loop
 CFLAGS		+= -diag-disable 170 # Array boundary checks
 CFLAGS		+= -diag-disable 177 # Unused functions
 CFLAGS		+= -diag-disable 181 # printf() format checks
 CFLAGS		+= -diag-disable 188 # enum strictness
 CFLAGS		+= -diag-disable 193 # Undefined preprocessor identifiers

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File ipxe.b0ded89e917b48b73097d3b8b88dfa3afb264ed0.patch of Package xen (Revision 3b077056294bcb49994ea3227248b4ad)

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