1 // errorcheck 2 3 // Copyright 2009 The Go Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style 5 // license that can be found in the LICENSE file. 6 7 // Test that interface{M()} = *interface{M()} produces a compiler error. 8 // Does not compile. 9 10 package main 11 12 type Inst interface { 13 Next() *Inst 14 } 15 16 type Regexp struct { 17 code []Inst 18 start Inst 19 } 20 21 type Start struct { 22 foo *Inst 23 } 24 25 func (start *Start) Next() *Inst { return nil } 26 27 28 func AddInst(Inst) *Inst { 29 print("ok in addinst\n") 30 return nil 31 } 32 33 func main() { 34 print("call addinst\n") 35 var x Inst = AddInst(new(Start)) // ERROR "pointer to interface" 36 print("return from addinst\n") 37 var y *Inst = new(Start) // ERROR "pointer to interface|incompatible type" 38 } 39
