github.com/core-coin/go-core/v2@v2.1.9/core/vm/runtime/fuzz.go (about)

     1  // Copyright 2017 by the Authors
     2  // This file is part of the go-core library.
     3  //
     4  // The go-core library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-core library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-core library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  //go:build gofuzz
    18  // +build gofuzz
    19  
    20  package runtime
    21  
    22  // Fuzz is the basic entry point for the go-fuzz tool
    23  //
    24  // This returns 1 for valid parsable/runable code, 0
    25  // for invalid opcode.
    26  func Fuzz(input []byte) int {
    27  	_, _, err := Execute(input, input, &Config{
    28  		EnergyLimit: 3000000,
    29  	})
    30  
    31  	// invalid opcode
    32  	if err != nil && len(err.Error()) > 6 && string(err.Error()[:7]) == "invalid" {
    33  		return 0
    34  	}
    35  
    36  	return 1
    37  }