--- libmalloc/libmalloc-657.60.21/tests/xzone_corruption.c
+++ /dev/null
@@ -1,118 +0,0 @@
-#include <sys/queue.h>
-
-#include <darwintest.h>
-#include <../src/internal.h>
-
-#if CONFIG_XZONE_MALLOC
-
-T_GLOBAL_META(T_META_RUN_CONCURRENTLY(true));
-
-// Ensure that all allocations get the same bucketing
-MALLOC_NOINLINE
-static void *
-malloc_wrapper(size_t n)
-{
-	return malloc(n);
-}
-
-static bool
-same_chunk(void *a, void *b)
-{
-	uintptr_t chunk_a =
-			(((uintptr_t)a) & (XZM_LIMIT_ADDRESS - 1)) >> XZM_TINY_CHUNK_SHIFT;
-	uintptr_t chunk_b =
-			(((uintptr_t)b) & (XZM_LIMIT_ADDRESS - 1)) >> XZM_TINY_CHUNK_SHIFT;
-	return chunk_a == chunk_b;
-}
-
-static void
-test_freelist_corruption(bool linkage)
-{
-	pid_t child_pid = fork();
-	T_ASSERT_NE(child_pid, -1, "fork()");
-
-	if (!child_pid) {
-		// Exhaust the early allocator
-		for (int i = 0; i < 1000; i++) {
-			void *p = malloc_wrapper(1024);
-			free(p);
-		}
-
-		uint32_t seqno_cycles = arc4random_uniform(100000);
-		uint32_t bit_to_flip = arc4random_uniform(64);
-
-		// Get two allocations from the same chunk, so that we can free and
-		// modify one without having to worry about the underlying page being
-		// madvised
-		void *p1, *p2;
-		p1 = malloc_wrapper(1024);
-		while (true) {
-			p2 = malloc_wrapper(1024);
-
-			if (same_chunk(p1, p2)) {
-				// Cycle the sequence number for the chunk up
-				for (uint32_t i = 0; i < seqno_cycles; i++) {
-					free(p2);
-					p2 = malloc_wrapper(1024);
-				}
-
-				// Retry a limited number of times, on the outside chance that
-				// the signature happens to also be valid for the corrupted bits
-				for (int i = 0; i < 5; i++) {
-					free(p2);
-
-					xzm_block_t block = p2;
-					if (linkage) {
-						block->xzb_linkage.xzbl_next_value ^= (1ull << bit_to_flip);
-					} else {
-						block->xzb_cookie ^= (1ull << bit_to_flip);
-					}
-
-					p2 = malloc_wrapper(1024);
-				}
-				T_ASSERT_FAIL("Corruption not detected");
-			}
-
-			p1 = p2;
-			// this process is intended to crash, so we're not worried about
-			// leaks
-		}
-
-		// Should not get here
-		T_FAIL("Tiny linkage corruption test failed");
-	} else {
-		int status;
-		pid_t wait_pid = waitpid(child_pid, &status, 0);
-		T_ASSERT_EQ(wait_pid, child_pid, "Got child status");
-		T_ASSERT_TRUE(WIFSIGNALED(status), "Child terminated by signal");
-	}
-}
-
-T_DECL(tiny_freelist_cookie_corruption,
-		"Crash on corruption of tiny freelist cookie",
-		T_META_ENVVAR("MallocXzoneSlotConfig=0"),
-		T_META_IGNORECRASHES("xzone_corruption"),
-		T_META_TAG_XZONE_ONLY)
-{
-	test_freelist_corruption(false);
-}
-
-T_DECL(tiny_freelist_linkage_corruption,
-		"Crash on corruption of tiny freelist linkage",
-		T_META_ENVVAR("MallocXzoneSlotConfig=0"),
-		T_META_IGNORECRASHES("xzone_corruption"),
-		T_META_TAG_XZONE_ONLY,
-		T_META_ENABLED(__has_feature(ptrauth_calls)))
-{
-	test_freelist_corruption(true);
-}
-
-#else // CONFIG_XZONE_MALLOC
-
-T_DECL(tiny_freelist_corruption, "Crash on corruption of tiny freelist",
-		T_META_ENABLED(false))
-{
-	T_SKIP("Nothing to test for !CONFIG_XZONE_MALLOC");
-}
-
-#endif // CONFIG_XZONE_MALLOC