--- libmalloc/libmalloc-409.40.6/src/malloc_common.h
+++ libmalloc/libmalloc-283/src/malloc_common.h
@@ -40,26 +40,4 @@
 malloc_common_value_for_key_copy(const char *src, const char *key,
 		 char *bufp, size_t maxlen);
 
-__options_decl(malloc_zone_options_t, unsigned, {
-	MZ_NONE  = 0x0,
-	MZ_POSIX = 0x1,
-	MZ_C11   = 0x2,
-});
-
-static MALLOC_INLINE void
-malloc_set_errno_fast(malloc_zone_options_t mzo, int err)
-{
-	if (mzo & MZ_POSIX) {
-#if TARGET_OS_SIMULATOR
-		errno = err;
-#else
-		(*_pthread_errno_address_direct()) = err;
-#endif
-	}
-}
-
-MALLOC_NOEXPORT
-void
-find_zone_and_free(void *ptr, bool known_non_default);
-
 #endif // __MALLOC_COMMON_H