--- Libc/Libc-1669.60.4/include/assert.h
+++ Libc/Libc-583/include/assert.h
@@ -50,40 +50,43 @@
  */
 
 #undef assert
+#undef __assert
 
 #ifdef NDEBUG
 #define	assert(e)	((void)0)
 #else
 
-#include <_assert.h>
-
-#ifdef __FILE_NAME__
-#define __ASSERT_FILE_NAME __FILE_NAME__
-#else /* __FILE_NAME__ */
-#define __ASSERT_FILE_NAME __FILE__
-#endif /* __FILE_NAME__ */
-
-#ifndef UNIFDEF_DRIVERKIT
 #ifndef __GNUC__
 
+__BEGIN_DECLS
+#ifndef __cplusplus
+void abort(void) __dead2;
+#endif /* !__cplusplus */
+int  printf(const char * __restrict, ...);
+__END_DECLS
+
 #define assert(e)  \
-    ((void) ((e) ? ((void)0) : __assert (#e, __ASSERT_FILE_NAME, __LINE__)))
+    ((void) ((e) ? 0 : __assert (#e, __FILE__, __LINE__)))
+#define __assert(e, file, line) \
+    ((void)printf ("%s:%u: failed assertion `%s'\n", file, line, e), abort())
 
 #else /* __GNUC__ */
 
+__BEGIN_DECLS
+void __assert_rtn(const char *, const char *, int, const char *) __dead2;
+void __eprintf(const char *, const char *, unsigned, const char *) __dead2;
+__END_DECLS
+
+#define __assert(e, file, line) \
+    __eprintf ("%s:%u: failed assertion `%s'\n", file, line, e)
+
 #if __DARWIN_UNIX03
 #define	assert(e) \
-    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __ASSERT_FILE_NAME, __LINE__, #e) : (void)0)
+    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
 #else /* !__DARWIN_UNIX03 */
 #define assert(e)  \
-    (__builtin_expect(!(e), 0) ? __assert (#e, __ASSERT_FILE_NAME, __LINE__) : (void)0)
+    (__builtin_expect(!(e), 0) ? __assert (#e, __FILE__, __LINE__) : (void)0)
 #endif /* __DARWIN_UNIX03 */
 
 #endif /* __GNUC__ */
-#else /* UNIFDEF_DRIVERKIT */
-#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>