Created
March 17, 2016 20:30
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Demo of go-yaml issue under Go 1.6
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| package main | |
| import ( | |
| "fmt" | |
| // Swap these 2 for comparison. Under Go 1.6 the program works | |
| // with json but not yaml. | |
| "gopkg.in/yaml.v2" | |
| // yaml "encoding/json" | |
| ) | |
| type bar struct { | |
| N int | |
| } | |
| type Foo struct { | |
| S string | |
| bar | |
| } | |
| func (f *Foo) Dump() { | |
| fmt.Printf("S: %s; N=%d\n", f.S, f.N) | |
| } | |
| func main() { | |
| x := Foo{S: "qux"} | |
| x.N = 99 | |
| x.Dump() | |
| bytes, err := yaml.Marshal(x) | |
| if err != nil { | |
| panic(err) | |
| } | |
| fmt.Printf("\nmarshalled:\n%s\n\n", string(bytes)) | |
| var y Foo | |
| err = yaml.Unmarshal(bytes, &y) | |
| if err != nil { | |
| panic(err) | |
| } | |
| y.Dump() | |
| } |
I'm getting the same problem. Used to work with go 1.5
I now use https://github.com/ghodss/yaml .. No more problem.. No change in my code.
panic: reflect.Value.Interface: cannot return value obtained from unexported field or method [recovered]
panic: reflect.Value.Interface: cannot return value obtained from unexported field or method
goroutine 20 [running]:
panic(0x807300, 0xc820223610)
/usr/local/go/src/runtime/panic.go:464 +0x3e6
gopkg.in/yaml%2ev2.handleErr(0xc820045f00)
/home/eric/Dropbox/go/src/gopkg.in/yaml.v2/yaml.go:153 +0xdf
panic(0x807300, 0xc820223610)
/usr/local/go/src/runtime/panic.go:426 +0x4e9
reflect.valueInterface(0x903860, 0xc820226040, 0x1d9, 0x807301, 0x0, 0x0)
/usr/local/go/src/reflect/value.go:919 +0xe7
reflect.Value.Interface(0x903860, 0xc820226040, 0x1d9, 0x0, 0x0)
/usr/local/go/src/reflect/value.go:908 +0x48
gopkg.in/yaml%2ev2.(*encoder).marshal(0xc8201782c0, 0x0, 0x0, 0x903860, 0xc820226040, 0x1d9)
/home/eric/Dropbox/go/src/gopkg.in/yaml.v2/encode.go:67 +0x89
gopkg.in/yaml%2ev2.(*encoder).structv.func1()
/home/eric/Dropbox/go/src/gopkg.in/yaml.v2/encode.go:166 +0x81d
gopkg.in/yaml%2ev2.(*encoder).mappingv(0xc8201782c0, 0x0, 0x0, 0xc8200458c0)
/home/eric/Dropbox/go/src/gopkg.in/yaml.v2/encode.go:196 +0x181
gopkg.in/yaml%2ev2.(*encoder).structv(0xc8201782c0, 0x0, 0x0, 0x955840, 0xc820226000, 0x199)
/home/eric/Dropbox/go/src/gopkg.in/yaml.v2/encode.go:184 +0x11b
gopkg.in/yaml%2ev2.(*encoder).marshal(0xc8201782c0, 0x0, 0x0, 0x955840, 0xc820226000, 0x199)
/home/eric/Dropbox/go/src/gopkg.in/yaml.v2/encode.go:101 +0xa16
gopkg.in/yaml%2ev2.(*encoder).slicev(0xc8201782c0, 0x0, 0x0, 0x916c40, 0xc82010ed80, 0x197)
/home/eric/Dropbox/go/src/gopkg.in/yaml.v2/encode.go:212 +0x247
gopkg.in/yaml%2ev2.(*encoder).marshal(0xc8201782c0, 0x0, 0x0, 0x916c40, 0xc82010ed80, 0x197)
/home/eric/Dropbox/go/src/gopkg.in/yaml.v2/encode.go:106 +0x988
gopkg.in/yaml%2ev2.(*encoder).marshal(0xc8201782c0, 0x0, 0x0, 0x91e840, 0xc82010ed80, 0x16)
/home/eric/Dropbox/go/src/gopkg.in/yaml.v2/encode.go:98 +0x827
gopkg.in/yaml%2ev2.Marshal(0x91e840, 0xc82010ed80, 0x0, 0x0, 0x0, 0x0, 0x0)
/home/eric/Dropbox/go/src/gopkg.in/yaml.v2/yaml.go:142 +0x11e
nearby/rest/lib.Users.Export.func2(0xc820223320, 0xc82010ed80)
/home/eric/Dropbox/go/src/nearby/rest/lib/user.go:153 +0x74
created by nearby/rest/lib.Users.Export
/home/eric/Dropbox/go/src/nearby/rest/lib/user.go:158 +0x45a
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Under Go 1.6 go-yaml fails like this:
encoding/json is fine.