input

"\0

panic

illegal
panic: bytes.Buffer: UnreadRune: previous operation was not ReadRune

goroutine 1 [running]:
panic(0x1c7fe0, 0xc82000a810)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/runtime/panic.go:481 +0x3e6
github.com/hashicorp/hcl/hcl/scanner.(*Scanner).unread(0xc82007d110)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/hashicorp/hcl/hcl/scanner/scanner.go:106 +0xcd
github.com/hashicorp/hcl/hcl/scanner.(*Scanner).scanDigits(0xc82007d110, 0x0, 0x8, 0x2, 0x0)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/hashicorp/hcl/hcl/scanner/scanner.go:537 +0x1ad
github.com/hashicorp/hcl/hcl/scanner.(*Scanner).scanEscape(0xc82007d110, 0x2200000000)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/hashicorp/hcl/hcl/scanner/scanner.go:509 +0x143
github.com/hashicorp/hcl/hcl/scanner.(*Scanner).scanString(0xc82007d110)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/hashicorp/hcl/hcl/scanner/scanner.go:493 +0x3c1
github.com/hashicorp/hcl/hcl/scanner.(*Scanner).Scan(0xc82007d110, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/hashicorp/hcl/hcl/scanner/scanner.go:166 +0x6a8
github.com/hashicorp/hcl/hcl/parser.(*Parser).scan(0xc820041c98, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/hashicorp/hcl/hcl/parser/parser.go:376 +0x156
github.com/hashicorp/hcl/hcl/parser.(*Parser).objectKey(0xc820041c98, 0x0, 0x0, 0x0, 0x0, 0x0)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/hashicorp/hcl/hcl/parser/parser.go:196 +0x122
github.com/hashicorp/hcl/hcl/parser.(*Parser).objectItem(0xc820041c98, 0x0, 0x0, 0x0)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/hashicorp/hcl/hcl/parser/parser.go:125 +0xd5
github.com/hashicorp/hcl/hcl/parser.(*Parser).objectList(0xc820041c98, 0x0, 0x0, 0x0)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/hashicorp/hcl/hcl/parser/parser.go:70 +0x127
github.com/hashicorp/hcl/hcl/parser.(*Parser).Parse(0xc820041c98, 0xc82007d110, 0x0, 0x0)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/hashicorp/hcl/hcl/parser/parser.go:53 +0x166
github.com/hashicorp/hcl/hcl/parser.Parse(0x413000, 0x3, 0x200000, 0x1, 0x0, 0x0)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/hashicorp/hcl/hcl/parser/parser.go:40 +0x261
github.com/hashicorp/hcl.parse(0x413000, 0x3, 0x200000, 0x4, 0x0, 0x0)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/hashicorp/hcl/parse.go:26 +0xcf
github.com/hashicorp/hcl.Unmarshal(0x413000, 0x3, 0x200000, 0x18a1e0, 0xc82002e080, 0x0, 0x0)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/hashicorp/hcl/decoder.go:27 +0x7e
github.com/BrianHicks/fuzz-hcl.parseSafely(0x413000, 0x3, 0x200000, 0x0, 0x0)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/BrianHicks/fuzz-hcl/main.go:23 +0xdb
github.com/BrianHicks/fuzz-hcl.Fuzz(0x413000, 0x3, 0x200000, 0x3)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/github.com/BrianHicks/fuzz-hcl/main.go:7 +0x6c
go-fuzz-dep.Main(0x239dc8)
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/go-fuzz-dep/main.go:49 +0x14c
main.main()
	/var/folders/f6/l26tk3xs5pjczcd5k5pcrmk00000gn/T/go-fuzz-build735862163/src/go.fuzz.main/main.go:10 +0x23
exit status 2

quoted

	"\"\\0"

test_code.go

package fuzzy

import "github.com/hashicorp/hcl"

// Fuzz does go-fuzz work
func Fuzz(data []byte) int {
	if err := parseSafely(data); err != nil {
		return 0
	}
	return 1
}

func parseSafely(buf []byte) (err error) {
	out := new(interface{})
	return hcl.Unmarshal(buf, &out)
}