--- /dev/null
+++ libmalloc/libmalloc-409.60.6/tests/xctests/quarantine_tests.m
@@ -0,0 +1,91 @@
+#import "internal.h"
+
+#if CONFIG_QUARANTINE
+
+#import <dlfcn.h>
+#import <XCTest/XCTest.h>
+
+#define XCTAssertNotNull(ptr) XCTAssertNotEqual(ptr, NULL)
+
+@interface quarantine_tests : XCTestCase {
+@private
+	malloc_zone_t *qzone;
+}
+@end
+
+@implementation quarantine_tests
+
+- (void)setUp {
+	setenv("MallocQuarantineNoPoisoning", "1", 1);
+	
+	malloc_zone_t *szone = create_scalable_zone(0, 0);
+	self->qzone = quarantine_create_zone(szone);
+}
+
+static void *
+memory_reader(task_t task, vm_address_t address, size_t size)
+{
+	void *p = malloc(size);
+	memcpy(p, address, size);
+	return p;
+}
+
+// Exported so that the symbol name isn't stripped and can be looked up via dladdr.
+MALLOC_EXPORT MALLOC_NOINLINE
+void *
+_quarantine_test_allocationFunction(malloc_zone_t *qzone, size_t size) {
+	void *p = malloc_zone_malloc(qzone, size);
+	asm volatile (""); // disable tail-calling
+	return p;
+}
+
+// Exported so that the symbol name isn't stripped and can be looked up via dladdr.
+MALLOC_EXPORT MALLOC_NOINLINE
+void
+_quarantine_test_deallocationFunction(malloc_zone_t *qzone, void *p) {
+	malloc_zone_free(qzone, p);
+	asm volatile (""); // disable tail-calling
+	return;
+}
+
+- (void)testStacktraces {
+	void *p = _quarantine_test_allocationFunction(qzone, 32);
+	XCTAssertNotNull(p);
+	_quarantine_test_deallocationFunction(qzone, p);
+	
+	quarantine_report_t report = {};
+	kern_return_t ret = quarantine_diagnose_fault_from_crash_reporter(p, &report, mach_task_self(), qzone, memory_reader);
+	XCTAssertEqual(ret, KERN_SUCCESS);
+	
+	XCTAssertEqual(report.fault_address, (uintptr_t)p);
+	XCTAssertEqual(report.nearest_allocation, (uintptr_t)p);
+	XCTAssertEqual(report.allocation_size, 32);
+	
+	bool allocSiteFrameFound = false;
+	for (int i = 0; i < report.alloc_trace.num_frames; i++) {
+		Dl_info info = {};
+		dladdr(report.alloc_trace.frames[i], &info);
+		NSLog(@"frame[%d] = %s", i, info.dli_sname);
+		if ([@(info.dli_sname) isEqualTo:@"_quarantine_test_allocationFunction"]) {
+			allocSiteFrameFound = true;
+			break;
+		}
+	}
+	XCTAssertTrue(allocSiteFrameFound);
+	
+	bool deallocSiteFrameFound = false;
+	for (int i = 0; i < report.dealloc_trace.num_frames; i++) {
+		Dl_info info = {};
+		dladdr(report.dealloc_trace.frames[i], &info);
+		NSLog(@"frame[%d] = %s", i, info.dli_sname);
+		if ([@(info.dli_sname) isEqualTo:@"_quarantine_test_deallocationFunction"]) {
+			deallocSiteFrameFound = true;
+			break;
+		}
+	}
+	XCTAssertTrue(deallocSiteFrameFound);
+}
+
+@end
+
+#endif // CONFIG_QUARANTINE