1 files changed, 21 insertions, 0 deletions
diff --git a/llvm/lib/Fuzzer/test/ShrinkValueProfileTest.cpp b/llvm/lib/Fuzzer/test/ShrinkValueProfileTest.cpp
new file mode 100644
index 00000000000..9ff5b19c7b6
--- /dev/null
+++ b/llvm/lib/Fuzzer/test/ShrinkValueProfileTest.cpp
@@ -0,0 +1,21 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Test that we can find the minimal item in the corpus (3 bytes: "FUZ").
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <cstring>
+#include <cstdio>
+
+static volatile uint32_t Sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size < sizeof(uint32_t)) return 0;
+  uint32_t X;
+  size_t Offset = Size < 8 ? 0 : Size / 2;
+  memcpy(&X, Data + Offset, sizeof(uint32_t));
+  Sink = X == 0xAABBCCDD;
+  return 0;
+}
+