1 files changed, 38 insertions, 0 deletions
diff --git a/projects/java-example/ExampleFuzzerNative.cpp b/projects/java-example/ExampleFuzzerNative.cpp
new file mode 100644
index 000000000..7ae0de80d
--- /dev/null
+++ b/projects/java-example/ExampleFuzzerNative.cpp
@@ -0,0 +1,38 @@
+// Copyright 2021 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#include "ExampleFuzzerNative.h"
+
+#include <string>
+
+// simple function containing a crash that requires coverage and string compare
+// instrumentation for the fuzzer to find
+void parseInternal(const std::string &input) {
+  if (input[0] == 'a' && input[1] == 'b' && input[5] == 'c') {
+    if (input.find("secret_in_native_library") != std::string::npos) {
+      // BOOM
+      *(char *)1 = 2;
+    }
+  }
+}
+
+JNIEXPORT jboolean JNICALL Java_ExampleFuzzerNative_parse(
+    JNIEnv *env, jobject o, jstring bytes) {
+  const char *input(env->GetStringUTFChars(bytes, nullptr));
+  parseInternal(input);
+  env->ReleaseStringUTFChars(bytes, input);
+  return false;
+}