diff --git a/tests/stdio_test.cpp b/tests/stdio_test.cpp
index 0d21dec..2912be4 100644
--- a/tests/stdio_test.cpp
+++ b/tests/stdio_test.cpp
@@ -79,6 +79,12 @@
   fclose(fp);
 }
 
+TEST(STDIO_TEST, tmpfile64) {
+  FILE* fp = tmpfile64();
+  ASSERT_TRUE(fp != nullptr);
+  fclose(fp);
+}
+
 TEST(STDIO_TEST, dprintf) {
   TemporaryFile tf;
 
@@ -875,6 +881,14 @@
   fclose(fp);
 }
 
+TEST(STDIO_TEST, fopen64_freopen64) {
+  FILE* fp = fopen64("/proc/version", "r");
+  ASSERT_TRUE(fp != nullptr);
+  fp = freopen64("/proc/version", "re", fp);
+  ASSERT_TRUE(fp != nullptr);
+  fclose(fp);
+}
+
 // https://code.google.com/p/android/issues/detail?id=81155
 // http://b/18556607
 TEST(STDIO_TEST, fread_unbuffered_pathological_performance) {