--- /dev/null
+++ Libc/Libc-1669.40.2/tests/freopen.c
@@ -0,0 +1,30 @@
+#include <darwintest.h>
+#include <darwintest_utils.h>
+
+#include "libc_hooks_helper.h"
+
+T_DECL(libc_hooks_freopen, "Test libc_hooks for freopen")
+{
+    char file[] = "/dev/null"; char mode1[] = "w"; char mode2[] = "r";
+
+    // Setup
+    T_SETUPBEGIN;
+    FILE *f1 = fopen(file, mode1);
+    T_SETUPEND;
+
+    // Test
+    libc_hooks_log_start();
+    FILE *f2 = freopen(file, mode2, f1);
+    libc_hooks_log_stop(3);
+
+    // Check
+    T_LOG("freopen(\"%s\", \"%s\", f2)", file, mode2, f1);
+
+    libc_hooks_log_expect(LIBC_HOOKS_LOG(libc_hooks_will_read_cstring, file, strlen(file) + 1), "checking file");
+    libc_hooks_log_expect(LIBC_HOOKS_LOG(libc_hooks_will_read_cstring, mode2, strlen(mode2) + 1), "checking mode");
+    libc_hooks_log_expect(LIBC_HOOKS_LOG(libc_hooks_will_write, f2, sizeof(*f2)), "checking f");
+
+    // Cleanup
+    fclose(f1);
+    fclose(f2);
+}