| // errchk $G $D/$F.go |
| |
| // Copyright 2009 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| // Static error messages about interface conversions. |
| |
| package main |
| |
| type T struct { a int } |
| var t *T |
| |
| type I interface { M() } |
| var i I |
| |
| type I2 interface { M(); N(); } |
| var i2 I2; |
| |
| var e interface { }; |
| |
| func main() { |
| e = t; // ok |
| t = e; // ERROR "need explicit" |
| |
| // neither of these can work, |
| // because i has an extra method |
| // that t does not, so i cannot contain a t. |
| i = t; // ERROR "missing|incompatible|is not" |
| t = i; // ERROR "missing|incompatible|is not" |
| |
| i = i2; // ok |
| i2 = i; // ERROR "need explicit" |
| } |