Add tools to use LLVM's libFuzzer (#1507)

This is useful for reproducing bugs found by oss-fuzz (see
https://bugs.chromium.org/p/oss-fuzz/issues/list?q=wabt)

1 files changed, 30 insertions, 0 deletions

diff --git a/src/tools/wasm2wat-fuzz.cc b/src/tools/wasm2wat-fuzz.cc
new file mode 100644
index 00000000..1318ef62
--- /dev/null
+++ b/src/tools/wasm2wat-fuzz.cc
@@ -0,0 +1,30 @@
+// Copyright 2019 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.
+//
+// This file is copied from the oss-fuzz project:
+//
+// https://github.com/google/oss-fuzz/blob/master/projects/wabt/wasm2wat_fuzzer.cc
+
+#include "src/binary-reader-ir.h"
+#include "src/binary-reader.h"
+#include "src/common.h"
+#include "src/ir.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  wabt::ReadBinaryOptions options;
+  wabt::Errors errors;
+  wabt::Module module;
+  wabt::ReadBinaryIr("dummy filename", data, size, options, &errors, &module);
+  return 0;
+}