--- Libc/Libc-1353.41.1/tests/backtrace.c
+++ /dev/null
@@ -1,171 +0,0 @@
-#include <darwintest.h>
-#include <dlfcn.h>
-#include <execinfo.h>
-#include <mach-o/dyld_priv.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <uuid/uuid.h>
-
-
-#define MAX_FRAMES 32
-static const int expected_nframes = 20;
-static const int skip_nframes = 5;
-
-static void *observed_bt[MAX_FRAMES] = {};
-static int observed_nframes = 0;
-static unsigned int save_fp_at_nframes = 0;
-static void *save_fp = NULL;
-
-static int __attribute__((noinline,not_tail_called,disable_tail_calls))
-recurse_a(unsigned int frames);
-static int __attribute__((noinline,not_tail_called,disable_tail_calls))
-recurse_b(unsigned int frames);
-
-static int __attribute__((noinline,not_tail_called,disable_tail_calls))
-recurse_a(unsigned int frames)
-{
-	if (frames == 0) {
-		if (save_fp_at_nframes > 0) {
-			observed_nframes = backtrace_from_fp(save_fp, observed_bt,
-					MAX_FRAMES);
-		} else {
-			observed_nframes = backtrace(observed_bt, MAX_FRAMES);
-		}
-		return 0;
-	} else if (frames == save_fp_at_nframes) {
-		save_fp = __builtin_frame_address(0);
-	}
-
-	return recurse_b(frames - 1);
-}
-
-static int __attribute__((noinline,not_tail_called,disable_tail_calls))
-recurse_b(unsigned int frames)
-{
-	if (frames == 0) {
-		if (save_fp_at_nframes > 0) {
-			observed_nframes = backtrace_from_fp(save_fp, observed_bt,
-					MAX_FRAMES);
-		} else {
-			observed_nframes = backtrace(observed_bt, MAX_FRAMES);
-		}
-		return 0;
-	} else if (frames == save_fp_at_nframes) {
-		save_fp = __builtin_frame_address(0);
-	}
-
-	return recurse_a(frames - 1);
-}
-
-static void __attribute__((noinline,not_tail_called,disable_tail_calls))
-setup_and_backtrace(unsigned int nframes, unsigned int skip)
-{
-	save_fp_at_nframes = skip ? skip - 1 : 0;
-	recurse_a(nframes - 1);
-}
-
-static bool
-check_for_setup(int i, struct dl_info *info)
-{
-	int ret = dladdr(observed_bt[i], info);
-	T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "dladdr(%p)", observed_bt[i]);
-	void *setup_fp = (void *)&setup_and_backtrace;
-	return info->dli_saddr == setup_fp;
-}
-
-static void __attribute__((noinline,not_tail_called))
-expect_backtrace(void)
-{
-	void *recurse_a_fp = (void *)&recurse_a;
-	void *recurse_b_fp = (void *)&recurse_b;
-
-	void *tmp_backtrace[MAX_FRAMES];
-	const int observed_existing_nframes = backtrace(tmp_backtrace, MAX_FRAMES);
-
-	T_EXPECT_EQ(expected_nframes,
-			observed_nframes - observed_existing_nframes,
-			"number of frames traced matches %d", expected_nframes);
-	bool expect_a = !(skip_nframes % 2);
-	bool found_setup = false;
-
-	for (int i = 0; i < observed_nframes; i++) {
-		struct dl_info info;
-		if (check_for_setup(i, &info)) {
-			found_setup = true;
-			break;
-		}
-
-		void *expected_saddr = expect_a ? recurse_a_fp : recurse_b_fp;
-		void *observed_saddr = info.dli_saddr;
-		T_EXPECT_EQ(observed_saddr, expected_saddr,
-                "frame %d (%p: %s) matches", i, observed_bt[i], info.dli_sname);
-		expect_a = !expect_a;
-	}
-
-	T_EXPECT_TRUE(found_setup, "should have found the setup frame");
-}
-
-T_DECL(backtrace, "ensure backtrace(3) gives the correct backtrace")
-{
-	setup_and_backtrace(expected_nframes, 0);
-	expect_backtrace();
-}
-
-T_DECL(backtrace_from_fp,
-		"ensure backtrace_from_fp(3) starts from the correct frame")
-{
-	setup_and_backtrace(expected_nframes + skip_nframes, skip_nframes);
-	expect_backtrace();
-}
-
-T_DECL(backtrace_image_offsets,
-		"ensure backtrace_image_offsets(3) provides valid UUIDs and offsets")
-{
-	setup_and_backtrace(expected_nframes, 0);
-	struct image_offset imgoffs[observed_nframes];
-	backtrace_image_offsets(observed_bt, imgoffs, observed_nframes);
-
-	bool found_setup = false;
-
-	for (int i = 0; i < observed_nframes; i++) {
-		struct dl_info info;
-		if (check_for_setup(i, &info)) {
-			found_setup = true;
-			break;
-		}
-
-		const struct mach_header *mh =
-				dyld_image_header_containing_address(observed_bt[i]);
-
-		uuid_t expected_uuid;
-		bool got_uuid = _dyld_get_image_uuid(mh, expected_uuid);
-		T_QUIET; T_ASSERT_TRUE(got_uuid, "got UUID for Mach-O header");
-
-		T_EXPECT_EQ(uuid_compare(expected_uuid, imgoffs[i].uuid), 0,
-				"frame %d's UUID matches", i);
-		T_EXPECT_EQ((uintptr_t)observed_bt[i] - (uintptr_t)info.dli_fbase,
-				(uintptr_t)imgoffs[i].offset, "frame %d's offset matches", i);
-	}
-
-	T_EXPECT_TRUE(found_setup, "should have found the setup frame");
-}
-
-T_DECL(backtrace_symbols, "tests backtrace_symbols")
-{
-	setup_and_backtrace(expected_nframes, 0);
-
-	char **symbols = backtrace_symbols(observed_bt, observed_nframes);
-
-	bool found_setup = false;
-
-	for (int i = 0; i < observed_nframes; i++) {
-		T_LOG("frame[%d]: %s", i, symbols[i]);
-		if (strstr(symbols[i], "setup_and_backtrace") != NULL) {
-			found_setup = true;
-		}
-	}
-
-	T_EXPECT_TRUE(found_setup, "should have found the setup frame");
-
-	free(symbols);
-}