encoding/json: output not always valid input

[gopherbot]

by 2852914@wessie.info:

What does 'go version' print?

go version go1.3.3 linux/amd64

What steps reproduce the problem?

http://play.golang.org/p/MQmD9eJmYY

1. Define type with underlying type []byte
2. Marshal a value of said type
3. Try to Unmarshal the result from Marshal

What happened?

Received an error "json: cannot unmarshal string into Go value of type
main.Bytes"

What should have happened instead?

Marshal should either refuse to encode the type, or Unmarshal should unmarshal the
result correctly.

The error happens because the encoding process compares against the slice element type,
while the decoding process compares against the slice type.

[ianlancetaylor]

Comment 1:

Labels changed: added repo-main, release-go1.5.

[osocurioso]

Mailed http://golang.org/cl/9371.

[gopherbot]

CL https://golang.org/cl/9371 mentions this issue.