--- /dev/null
+++ libmalloc/libmalloc-409.60.6/tests/xctests/malloc_mocks.c
@@ -0,0 +1,38 @@
+#include "internal.h"
+#include <setjmp.h>
+
+bool
+malloc_tracing_enabled = false;
+
+malloc_zero_policy_t malloc_zero_policy = MALLOC_ZERO_POLICY_DEFAULT;
+unsigned malloc_zero_on_free_sample_period = 0;
+
+void
+malloc_zone_check_fail(const char *msg, const char *fmt, ...)
+{
+	__builtin_trap();
+}
+
+void
+malloc_error_break(void)
+{
+	__builtin_trap();
+}
+
+jmp_buf *zone_error_expected_jmp;
+
+void
+malloc_zone_error(uint32_t flags, bool is_corruption, const char *fmt, ...)
+{
+	if (!zone_error_expected_jmp || !is_corruption) {
+		__builtin_trap();
+	}
+
+	longjmp(zone_error_expected_jmp, 1);
+}
+
+void
+find_zone_and_free(void *ptr, bool known_non_default)
+{
+	__builtin_trap();
+}