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mirror of https://github.com/golang/go synced 2024-11-22 17:04:40 -07:00
go/test/ken/interbasic.go
Ian Lance Taylor 22a6747999 Per discussion earlier today with r and gri: when an interface
object has a value of type "int", it should not automatically
convert to type "int32".  That is, the type alias "int" should
be regarded as having been defined as though "type int int32"
appeared outside of the package, and as therefore being a
different type from "int32".

R=ken
DELTA=21  (20 added, 0 deleted, 1 changed)
OCL=17587
CL=17842
2008-10-24 22:40:32 -07:00

106 lines
1.9 KiB
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 myint int;
type mystring string;
type I0 interface {};
func
f()
{
var ia, ib I0;
var i myint;
var s mystring;
if ia != ib { panicln("1"); }
i = 1;
ia = i;
ib = i;
if ia != ib { panicln("2"); }
if ia == nil { panicln("3"); }
i = 2;
ia = i;
if ia == ib { panicln("4"); }
ia = nil;
if ia == ib { panicln("5"); }
ib = nil;
if ia != ib { panicln("6"); }
if ia != nil { panicln("7"); }
s = "abc";
ia = s;
ib = nil;
if ia == ib { panicln("8"); }
s = "def";
ib = s;
if ia == ib { panicln("9"); }
s = "abc";
ib = s;
if ia != ib { panicln("a"); }
}
func
main()
{
var ia [20]I0;
var b bool;
var s string;
var i8 int8;
var i16 int16;
var i32 int32;
var i64 int64;
var u8 uint8;
var u16 uint16;
var u32 uint32;
var u64 uint64;
f();
ia[0] = "xxx";
ia[1] = 12345;
ia[2] = true;
s = "now is"; ia[3] = s;
b = false; ia[4] = b;
i8 = 29; ia[5] = i8;
i16 = 994; ia[6] = i16;
i32 = 3434; ia[7] = i32;
i64 = 1234567; ia[8] = i64;
u8 = 12; ia[9] = u8;
u16 = 799; ia[10] = u16;
u32 = 4455; ia[11] = u32;
u64 = 765432; ia[12] = u64;
s = ia[0]; if s != "xxx" { panicln(0,s); }
i32 = ia[1].(int).(int32);
if i32 != 12345 { panicln(1,i32); }
b = ia[2]; if b != true { panicln(2,b); }
s = ia[3]; if s != "now is" { panicln(3,s); }
b = ia[4]; if b != false { panicln(4,b); }
i8 = ia[5]; if i8 != 29 { panicln(5,i8); }
i16 = ia[6]; if i16 != 994 { panicln(6,i16); }
i32 = ia[7]; if i32 != 3434 { panicln(7,i32); }
i64 = ia[8]; if i64 != 1234567 { panicln(8,i64); }
u8 = ia[9]; if u8 != 12 { panicln(5,u8); }
u16 = ia[10]; if u16 != 799 { panicln(6,u16); }
u32 = ia[11]; if u32 != 4455 { panicln(7,u32); }
u64 = ia[12]; if u64 != 765432 { panicln(8,u64); }
}