--- libmalloc/libmalloc-474.0.13/src/vm.h
+++ libmalloc/libmalloc-374.40.6/src/vm.h
@@ -28,8 +28,7 @@
 static inline bool
 mvm_aslr_enabled(void)
 {
-	extern struct mach_header __dso_handle;
-	return _dyld_get_image_slide(&__dso_handle);
+	return _dyld_get_image_slide((const struct mach_header *)_NSGetMachExecuteHeader()) != 0;
 }
 
 MALLOC_NOEXPORT
@@ -52,22 +51,4 @@
 void
 mvm_protect(void *address, size_t size, unsigned protection, unsigned debug_flags);
 
-#if CONFIG_DEFERRED_RECLAIM
-MALLOC_NOEXPORT
-kern_return_t
-mvm_deferred_reclaim_init(void);
-
-MALLOC_NOEXPORT
-bool
-mvm_reclaim_mark_used(uint64_t id, mach_vm_address_t ptr, uint32_t size, unsigned int debug_flags);
-
-MALLOC_NOEXPORT
-uint64_t
-mvm_reclaim_mark_free(vm_address_t ptr, uint32_t size, unsigned int debug_flags);
-
-MALLOC_NOEXPORT
-bool
-mvm_reclaim_is_available(uint64_t id);
-#endif // CONFIG_DEFERRED_RECLAIM
-
 #endif // __VM_H