1 files changed, 11 insertions, 1 deletions
diff --git a/lib/Fuzzer/test/StrstrTest.cpp b/lib/Fuzzer/test/StrstrTest.cpp
index 90d539b660a9b..f021e75ec0fde 100644
--- a/lib/Fuzzer/test/StrstrTest.cpp
+++ b/lib/Fuzzer/test/StrstrTest.cpp
@@ -8,9 +8,19 @@
 #include <cstdio>
 #include <cstdlib>
 
+// Windows does not have strcasestr and memmem, so we are not testing them.
+#ifdef _WIN32
+#define strcasestr strstr
+#define memmem(a, b, c, d) true
+#endif
+
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size < 4) return 0;
   std::string s(reinterpret_cast<const char*>(Data), Size);
-  if (strstr(s.c_str(), "FUZZ") && strcasestr(s.c_str(), "aBcD")) {
+  if (strstr(s.c_str(), "FUZZ") &&
+      strcasestr(s.c_str(), "aBcD") &&
+      memmem(s.data(), s.size(), "kuku", 4)
+      ) {
     fprintf(stderr, "BINGO\n");
     exit(1);
   }