--- /dev/null
+++ libmalloc/libmalloc-715.100.22/include/malloc/_malloc.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2018-2023 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#ifndef _MALLOC_UNDERSCORE_MALLOC_H_
+#define _MALLOC_UNDERSCORE_MALLOC_H_
+
+/*
+ * This header is included from <stdlib.h>, so the contents of this file have
+ * broad source compatibility and POSIX conformance implications.
+ * Be cautious about what is included and declared here.
+ */
+
+#include <Availability.h>
+#include <sys/cdefs.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 * __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 * __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 * __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
+/* 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
+
+#endif /* _MALLOC_UNDERSCORE_MALLOC_H_ */