--- /dev/null
+++ libmalloc/libmalloc-374.60.3/tests/xctests/malloc_mocks.c
@@ -0,0 +1,16 @@
+#include "internal.h"
+
+bool
+malloc_tracing_enabled = false;
+
+void
+malloc_zone_check_fail(const char *msg, const char *fmt, ...)
+{
+	__builtin_trap();
+}
+
+void
+malloc_error_break(void)
+{
+	__builtin_trap();
+}