[libFuzzer] make -runs=N flag also affect the simple runner (will execute every input N times)

llvm-svn: 260649

1 files changed, 15 insertions, 0 deletions

diff --git a/llvm/lib/Fuzzer/test/NthRunCrashTest.cpp b/llvm/lib/Fuzzer/test/NthRunCrashTest.cpp
new file mode 100644
index 0000000..03d03d0
--- /dev/null
+++ b/llvm/lib/Fuzzer/test/NthRunCrashTest.cpp
@@ -0,0 +1,15 @@
+// Crash on the N-th execution.
+#include <cstdint>
+#include <cstddef>
+#include <iostream>
+
+static int Counter;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Counter++ == 1000) {
+    std::cout << "BINGO; Found the target, exiting\n";
+    exit(1);
+  }
+  return 0;
+}
+