1 files changed, 20 insertions, 0 deletions
diff --git a/lib/Fuzzer/test/FullCoverageSetTest.cpp b/lib/Fuzzer/test/FullCoverageSetTest.cpp
new file mode 100644
index 0000000000000..2c6ff98db0055
--- /dev/null
+++ b/lib/Fuzzer/test/FullCoverageSetTest.cpp
@@ -0,0 +1,20 @@
+// Simple test for a fuzzer. The fuzzer must find the string "FUZZER".
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+extern "C" void LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  int bits = 0;
+  if (Size > 0 && Data[0] == 'F') bits |= 1;
+  if (Size > 1 && Data[1] == 'U') bits |= 2;
+  if (Size > 2 && Data[2] == 'Z') bits |= 4;
+  if (Size > 3 && Data[3] == 'Z') bits |= 8;
+  if (Size > 4 && Data[4] == 'E') bits |= 16;
+  if (Size > 5 && Data[5] == 'R') bits |= 32;
+  if (bits == 63) {
+    std::cerr <<  "BINGO!\n";
+    exit(1);
+  }
+}
+