--- libmalloc/libmalloc-409.60.6/include/malloc/_malloc.h
+++ libmalloc/libmalloc-646.0.13/include/malloc/_malloc.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2018-2023 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  *
@@ -32,24 +32,40 @@
 
 #include <Availability.h>
 #include <sys/cdefs.h>
-#include <_types.h>
+#if __has_include(<sys/_types/_size_t.h>)
 #include <sys/_types/_size_t.h>
+#else
+#define __need_size_t
+#include <stddef.h>
+#undef __need_size_t
+#endif
+
+#if !defined(_ANSI_SOURCE) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
+#include <malloc/_malloc_type.h>
+#else
+#define _MALLOC_TYPED(override, type_param_pos)
+#endif
+
+#include <malloc/_ptrcheck.h>
+__ptrcheck_abi_assume_single()
 
 __BEGIN_DECLS
 
-void	*malloc(size_t __size) __result_use_check __alloc_size(1);
-void	*calloc(size_t __count, size_t __size) __result_use_check __alloc_size(1,2);
-void	 free(void *);
-void	*realloc(void *__ptr, size_t __size) __result_use_check __alloc_size(2);
+void * __sized_by_or_null(__size) malloc(size_t __size) __result_use_check __alloc_size(1) _MALLOC_TYPED(malloc_type_malloc, 1);
+void * __sized_by_or_null(__count * __size) calloc(size_t __count, size_t __size) __result_use_check __alloc_size(1,2) _MALLOC_TYPED(malloc_type_calloc, 2);
+void  free(void * __unsafe_indexable);
+void * __sized_by_or_null(__size) realloc(void * __unsafe_indexable __ptr, size_t __size) __result_use_check __alloc_size(2) _MALLOC_TYPED(malloc_type_realloc, 2);
+void * __sized_by_or_null(__size) reallocf(void * __unsafe_indexable __ptr, size_t __size) __result_use_check __alloc_size(2);
 #if !defined(_ANSI_SOURCE) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
-void	*valloc(size_t) __alloc_size(1);
-#endif // !defined(_ANSI_SOURCE) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
-#if (__DARWIN_C_LEVEL >= __DARWIN_C_FULL) || \
+void * __sized_by_or_null(__size) valloc(size_t __size) __result_use_check __alloc_size(1) _MALLOC_TYPED(malloc_type_valloc, 1);
+#endif /* !defined(_ANSI_SOURCE) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)) */
+#if (defined(__DARWIN_C_LEVEL) && defined(__DARWIN_C_FULL) && __DARWIN_C_LEVEL >= __DARWIN_C_FULL) || \
     (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) || \
     (defined(__cplusplus) && __cplusplus >= 201703L)
-void    *aligned_alloc(size_t __alignment, size_t __size) __result_use_check __alloc_size(2) __OSX_AVAILABLE(10.15) __IOS_AVAILABLE(13.0) __TVOS_AVAILABLE(13.0) __WATCHOS_AVAILABLE(6.0);
+void * __sized_by_or_null(__size) aligned_alloc(size_t __alignment, size_t __size) __result_use_check __alloc_align(1) __alloc_size(2) _MALLOC_TYPED(malloc_type_aligned_alloc, 2) __OSX_AVAILABLE(10.15) __IOS_AVAILABLE(13.0) __TVOS_AVAILABLE(13.0) __WATCHOS_AVAILABLE(6.0);
 #endif
-int 	 posix_memalign(void **__memptr, size_t __alignment, size_t __size) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
+/* rdar://120689514 */
+int   posix_memalign(void * __unsafe_indexable *__memptr, size_t __alignment, size_t __size) _MALLOC_TYPED(malloc_type_posix_memalign, 3)  __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
 
 __END_DECLS