1 files changed, 36 insertions, 0 deletions
diff --git a/core/vm/evm/runtime/fuzz.go b/core/vm/evm/runtime/fuzz.go
new file mode 100644
index 000000000..cb9ff08b5
--- /dev/null
+++ b/core/vm/evm/runtime/fuzz.go
@@ -0,0 +1,36 @@
+// Copyright 2017 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// +build gofuzz
+
+package runtime
+
+// Fuzz is the basic entry point for the go-fuzz tool
+//
+// This returns 1 for valid parsable/runable code, 0
+// for invalid opcode.
+func Fuzz(input []byte) int {
+	_, _, err := Execute(input, input, &Config{
+		GasLimit: 3000000,
+	})
+
+	// invalid opcode
+	if err != nil && len(err.Error()) > 6 && string(err.Error()[:7]) == "invalid" {
+		return 0
+	}
+
+	return 1
+}