Meta: Add a Wasm parser fuzzer

2 files changed, 21 insertions, 0 deletions

diff --git a/Meta/Lagom/Fuzzers/CMakeLists.txt b/Meta/Lagom/Fuzzers/CMakeLists.txt
index d0e4a5f82d..9bb0ab0d73 100644
--- a/Meta/Lagom/Fuzzers/CMakeLists.txt
+++ b/Meta/Lagom/Fuzzers/CMakeLists.txt
@@ -44,6 +44,7 @@ add_simple_fuzzer(FuzzURL)
 add_simple_fuzzer(FuzzUTF16BEDecoder)
 add_simple_fuzzer(FuzzRSAKeyParsing)
 add_simple_fuzzer(FuzzWAVLoader)
+add_simple_fuzzer(FuzzWasmParser)
 add_simple_fuzzer(FuzzZip)
 add_simple_fuzzer(FuzzZlibDecompression)
 
diff --git a/Meta/Lagom/Fuzzers/FuzzWasmParser.cpp b/Meta/Lagom/Fuzzers/FuzzWasmParser.cpp
new file mode 100644
index 0000000000..7bdfe4b6bd
--- /dev/null
+++ b/Meta/Lagom/Fuzzers/FuzzWasmParser.cpp
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2021, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/MemoryStream.h>
+#include <AK/Stream.h>
+#include <LibWasm/Types.h>
+#include <stddef.h>
+#include <stdint.h>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+    ReadonlyBytes bytes { data, size };
+    InputMemoryStream stream { bytes };
+    [[maybe_unused]] auto result = Wasm::Module::parse(stream);
+    stream.handle_any_error();
+    return 0;
+}