1 files changed, 25 insertions, 0 deletions
diff --git a/test/fuzzer/DeepRecursionTest.cpp b/test/fuzzer/DeepRecursionTest.cpp
new file mode 100644
index 000000000000..bf4621d04923
--- /dev/null
+++ b/test/fuzzer/DeepRecursionTest.cpp
@@ -0,0 +1,25 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a fuzzer. The fuzzer must find the deep recursion.
+// To generate a crashy input:
+// for((i=0;i<110;i++)); do echo -n ABCDEFGHIJ  >> INPUT; done
+#include <cstddef>
+#include <cstdint>
+#include <cstdlib>
+
+static volatile int Sink;
+
+void Recursive(const uint8_t *Data, size_t Size, int Depth) {
+  if (Depth > 1000) abort();
+  if (!Size) return;
+  if (*Data == ('A' + Depth % 10))
+    Recursive(Data + 1, Size - 1, Depth + 1);
+  Sink++;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  Recursive(Data, Size, 0);
+  return 0;
+}
+