--- libmalloc/libmalloc-715.120.13/xcodeconfig/libmalloc.xcconfig
+++ libmalloc/libmalloc-646.40.3/xcodeconfig/libmalloc.xcconfig
@@ -28,13 +28,12 @@
 OSATOMIC_PREPROCESSOR_DEFINITIONS_NOINLINE = OSATOMIC_DEPRECATED=0 OSATOMIC_USE_INLINED=0 OS_UNFAIR_LOCK_INLINE=0
 DRIVERKIT_PREPROCESSOR_DEFINITIONS[sdk=driverkit.macosx*] = MALLOC_TARGET_DK_OSX=1
 DRIVERKIT_PREPROCESSOR_DEFINITIONS[sdk=driverkit.iphoneos*] = MALLOC_TARGET_DK_IOS=1
-DRIVERKIT_PREPROCESSOR_DEFINITIONS[sdk=driverkit.xros*] = MALLOC_TARGET_DK_IOS=0 MALLOC_TARGET_DK_VISIONOS=1
 
 GCC_NO_COMMON_BLOCKS = YES
 ENABLE_STRICT_OBJC_MSGSEND = YES
 
 // TODO: Add -fno-stack-protector when uplink to Libc is removed
-OTHER_CFLAGS = $(inherited) $(PLATFORM_CFLAGS)
+OTHER_CFLAGS = $(inherited) $(PLATFORM_CFLAGS) -fno-typed-memory-operations
 OTHER_CFLAGS_normal = $(inherited) -momit-leaf-frame-pointer
 
 LLVM_LTO = LLVM_LTO_$(CURRENT_VARIANT)