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encoding/asn1: call of reflect.Value.Type on zero Value #11127

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dvyukov opened this issue Jun 9, 2015 · 1 comment
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encoding/asn1: call of reflect.Value.Type on zero Value #11127

dvyukov opened this issue Jun 9, 2015 · 1 comment
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Go1.6

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@dvyukov
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dvyukov commented Jun 9, 2015

The following program crashes with the panic:

package main

import "encoding/asn1"

func main() {
    var v interface{}
    asn1.Marshal(v)
}
panic: reflect: call of reflect.Value.Type on zero Value

goroutine 1 [running]:
reflect.Value.Type(0x0, 0x0, 0x0, 0x0, 0x0)
    src/reflect/value.go:1664 +0x7b
encoding/asn1.marshalField(0xc20807deb0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
    src/encoding/asn1/marshal.go:536 +0x540
encoding/asn1.Marshal(0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
    src/encoding/asn1/marshal.go:646 +0x14d
main.main()
    asn1.go:7 +0x2d

Marshal should return an error instead.

on commit b0532a9
@ianlancetaylor ianlancetaylor added this to the Go1.6 milestone Jun 9, 2015
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CL https://golang.org/cl/13923 mentions this issue.

@agl agl closed this as completed in fac1039 Aug 29, 2015
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