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fmt: doesn't print nil slice correctly #7639

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gopherbot opened this issue Mar 26, 2014 · 4 comments
Closed

fmt: doesn't print nil slice correctly #7639

gopherbot opened this issue Mar 26, 2014 · 4 comments
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@gopherbot
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@gopherbot gopherbot commented Mar 26, 2014

by leterip:

What does 'go version' print?
go1.2.1

What steps reproduce the problem?
If possible, include a link to a program on play.golang.org.

1. http://play.golang.org/p/npUWWoTYip

What happened?
map[int]uint8(nil)
[]byte{}

What should have happened instead?
map[int]uint8(nil)
[]byte(nil)

Please provide any additional information below.
@robpike
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@robpike robpike commented Mar 26, 2014

Comment 1:

The real problem is that the printing of a nil slice is wrong.
http://play.golang.org/p/68k5ZUqzKd
package main
import "fmt"
func main() {
    var y []byte
    fmt.Printf("%#v\n", y)
    y = []byte{}
    fmt.Printf("%#v\n", y)
}
prints
[]byte{}
[]byte{}
but should print
[]byte(nil)
[]byte{}
This is a bug and should be fixed.

Labels changed: added release-go1.3maybe.

Status changed to Accepted.

@robpike
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@robpike robpike commented Mar 26, 2014

Comment 2:

Labels changed: added repo-main.

@minux
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@minux minux commented Mar 27, 2014

Comment 3:

https://golang.org/cl/81240043

Owner changed to @minux.

Status changed to Started.

@minux
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@minux minux commented Apr 3, 2014

Comment 4:

This issue was closed by revision c274ff6.

Status changed to Fixed.

@gopherbot gopherbot added fixed labels Apr 3, 2014
@rsc rsc added this to the Go1.3 milestone Apr 14, 2015
@rsc rsc removed the release-go1.3maybe label Apr 14, 2015
@golang golang locked and limited conversation to collaborators Jun 25, 2016
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