--- Libc/Libc-1725.40.4/tests/custom_pcs_func.c
+++ /dev/null
@@ -1,25 +0,0 @@
-#include <darwintest.h>
-#include <execinfo.h>
-#include <libc_private.h>
-
-#define MAGIC ((void *)0xdeadbeef)
-
-static void custom_thread_stack_pcs(vm_address_t *buffer, unsigned max,
-               unsigned *nb, __unused unsigned skip, __unused void *startfp) {
-	T_EXPECT_GE(max, 1, "need to be allowed to write at least one address for this test to be sane");
-
-	buffer[0] = (vm_address_t)MAGIC;
-	*nb = 1;
-}
-
-T_DECL(custom_pcs_func, "make sure backtrace respects custom get pcs functions")
-{
-	backtrace_set_pcs_func(custom_thread_stack_pcs);
-
-	void *array[2] = { NULL, NULL };
-	int nframes = backtrace(array, 2);
-	T_EXPECT_EQ(nframes, 1, "custom_thread_stack_pcs should only find one pc");
-
-	T_EXPECT_EQ(array[1], NULL, "the second pc should not be written");
-	T_EXPECT_EQ(array[0], MAGIC, "the first pc magic should be %p", MAGIC);
-}