--- Libc/Libc-1725.40.4/include/assert.h
+++ Libc/Libc-1506.40.4/include/assert.h
@@ -40,6 +40,9 @@
  */
 
 #include <sys/cdefs.h>
+#ifdef __cplusplus
+#include <stdlib.h>
+#endif /* __cplusplus */
 
 /*
  * Unlike other ANSI header files, <assert.h> may usefully be included
@@ -47,12 +50,11 @@
  */
 
 #undef assert
+#undef __assert
 
 #ifdef NDEBUG
 #define	assert(e)	((void)0)
 #else
-
-#include <_assert.h>
 
 #ifdef __FILE_NAME__
 #define __ASSERT_FILE_NAME __FILE_NAME__
@@ -63,10 +65,35 @@
 #ifndef UNIFDEF_DRIVERKIT
 #ifndef __GNUC__
 
+__BEGIN_DECLS
+#ifndef __cplusplus
+void abort(void) __dead2 __cold;
+#endif /* !__cplusplus */
+int  printf(const char * __restrict, ...);
+__END_DECLS
+
 #define assert(e)  \
     ((void) ((e) ? ((void)0) : __assert (#e, __ASSERT_FILE_NAME, __LINE__)))
+#define __assert(e, file, line) \
+    ((void)printf ("%s:%d: failed assertion `%s'\n", file, line, e), abort())
 
 #else /* __GNUC__ */
+
+__BEGIN_DECLS
+void __assert_rtn(const char *, const char *, int, const char *) __dead2 __cold __disable_tail_calls;
+#if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1070)
+void __eprintf(const char *, const char *, unsigned, const char *) __dead2 __cold;
+#endif
+__END_DECLS
+
+#if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1070)
+#define __assert(e, file, line) \
+    __eprintf ("%s:%d: failed assertion `%s'\n", file, line, e)
+#else
+/* 8462256: modified __assert_rtn() replaces deprecated __eprintf() */
+#define __assert(e, file, line) \
+    __assert_rtn ((const char *)-1L, file, line, e)
+#endif
 
 #if __DARWIN_UNIX03
 #define	assert(e) \
@@ -78,9 +105,21 @@
 
 #endif /* __GNUC__ */
 #else /* UNIFDEF_DRIVERKIT */
+__BEGIN_DECLS
+void __assert_rtn(const char *, const char *, int, const char *) __dead2 __cold __disable_tail_calls;
+__END_DECLS
 #define	assert(e) \
     (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __ASSERT_FILE_NAME, __LINE__, #e) : (void)0)
 #endif /* UNIFDEF_DRIVERKIT */
 #endif /* NDEBUG */
 
-#include <_static_assert.h>
+#ifndef _ASSERT_H_
+#define _ASSERT_H_
+
+#ifndef __cplusplus
+#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
+#define static_assert _Static_assert
+#endif /* __STDC_VERSION__ */
+#endif /* !__cplusplus */
+
+#endif /* _ASSERT_H_ */