code review 174042: make test/ken safe for optional semis

test/ken/interfun.go

 // $G $D/$F.go && $L $F.$A && ./$A.out
 
 // 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.
 
 package main
 
-type S struct
-{
+type S struct {
         a,b     int;
 }
 
-type I1 interface
-{
+type I1 interface {
         f       ()int;
 }
 
-type I2 interface
-{
+type I2 interface {
         g() int;
         f() int;
 }
 
-func
-(this *S) f()int
-{
+func (this *S) f()int {
         return this.a;
 }
 
-func
-(this *S) g()int
-{
+func (this *S) g()int {
         return this.b;
 }
 
 func
-main()
-{
+main() {
         var i1 I1;
         var i2 I2;
         var g *S;
 
         s := new(S);
         s.a = 5;
         s.b = 6;
 
         // call structure
         if s.f() != 5 { panic(11); }
         if s.g() != 6 { panic(12); }
 
         i1 = s;         // convert S to I1
         i2 = i1.(I2);   // convert I1 to I2
 
         // call interface
         if i1.f() != 5 { panic(21); }
         if i2.f() != 5 { panic(22); }
         if i2.g() != 6 { panic(23); }
 
         g = i1.(*S);            // convert I1 to S
         if g != s { panic(31); }
 
         g = i2.(*S);            // convert I2 to S
         if g != s { panic(32); }
 }