String literals fail when used in some conversion expressions #183
Description
by kirklin.mcdonald:
The following code fails to compile:
$ cat test3.go
package test
type T interface{}
var a = T("foo")
var b = (interface{})("bar")
kirk@mooquack ~/dev/gotest $ 6g test3.go
test3.go:5: illegal constant expression CONVIFACE string
test3.go:6: illegal constant expression CONVIFACE string
Given that the string type is assignment compatible with both T and
interface{}, I would expect this code to compile. The code compiles
successfully if string variables are used instead of string literals.
$ echo $GOOS $GOARCH
linux amd64
$ hg log -l1
changeset: 4040:703fb2c605af