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3b3c374240
The fuzz corpus was seeded with a small number of hand crafted examples and occasionally augmented manually by identifying code paths that were not touched and adding text to target those. Then iterating.
40 lines
854 B
Go
40 lines
854 B
Go
// Copyright ©2019 The Gonum Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build gofuzz
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package fuzz
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import (
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"bytes"
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"os/exec"
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"gonum.org/v1/gonum/graph/formats/dot"
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)
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// Fuzz implements the fuzzing function required for go-fuzz.
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//
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// See documentation at https://github.com/dvyukov/go-fuzz.
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func Fuzz(data []byte) int {
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// We don't accept empty data; the dot command does.
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if len(data) == 0 || bytes.Equal(data, []byte{0}) {
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return -1
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}
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// Check that dot accepts the input without complaint.
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cmd := exec.Command("dot")
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cmd.Stdin = bytes.NewReader(data)
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err := cmd.Run()
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if err != nil {
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return 0
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}
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// Try to parse the data.
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_, err = dot.Parse(bytes.NewReader(data))
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if err != nil {
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panic("could not parse good dot")
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}
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return 1
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}
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