mirror of
https://github.com/golang/go
synced 2024-11-25 13:07:57 -07:00
8f194bf5ff
various bug fixes and tests involving constants. test/const1.go is the major new test case. R=ken OCL=26216 CL=26224
80 lines
2.2 KiB
Go
80 lines
2.2 KiB
Go
// errchk $G -e $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.
|
|
|
|
package main
|
|
|
|
type I interface {}
|
|
const (
|
|
// assume all types behave similarly to int8/uint8
|
|
Int8 int8 = 101;
|
|
Minus1 int8 = -1;
|
|
Uint8 uint8 = 102;
|
|
Const = 103;
|
|
|
|
Float32 float32 = 104.5;
|
|
Float float = 105.5;
|
|
ConstFloat = 106.5;
|
|
Big float64 = 1e300;
|
|
|
|
String = "abc";
|
|
Bool = true;
|
|
)
|
|
|
|
var (
|
|
a1 = Int8 * 100; // ERROR "overflows"
|
|
a2 = Int8 * -1; // OK
|
|
a3 = Int8 * 1000; // ERROR "overflows"
|
|
a4 = Int8 * int8(1000); // ERROR "overflows"
|
|
a5 = int8(Int8 * 1000); // ERROR "overflows"
|
|
a6 = int8(Int8 * int8(1000)); // ERROR "overflows"
|
|
a7 = Int8 - 2*Int8 - 2*Int8; // ERROR "overflows"
|
|
a8 = Int8 * Const / 100; // ERROR "overflows"
|
|
a9 = Int8 * (Const / 100); // OK
|
|
|
|
b1 = Uint8 * Uint8; // ERROR "overflows"
|
|
b2 = Uint8 * -1; // ERROR "overflows"
|
|
b3 = Uint8 - Uint8; // OK
|
|
b4 = Uint8 - Uint8 - Uint8; // ERROR "overflows"
|
|
b5 = uint8(^0); // ERROR "overflows"
|
|
b6 = ^uint8(0); // ERROR "overflows"
|
|
b7 = uint8(Minus1); // ERROR "overflows"
|
|
b8 = uint8(int8(-1)); // ERROR "overflows"
|
|
b8a = uint8(-1); // ERROR "overflows"
|
|
b9 byte = (1<<10) >> 8; // OK
|
|
b10 byte = (1<<10); // ERROR "overflows"
|
|
b11 byte = (byte(1)<<10) >> 8; // ERROR "overflows"
|
|
b12 byte = 1000; // ERROR "overflows"
|
|
b13 byte = byte(1000); // ERROR "overflows"
|
|
b14 byte = byte(100) * byte(100); // ERROR "overflows"
|
|
b15 byte = byte(100) * 100; // ERROR "overflows"
|
|
b16 byte = byte(0) * 1000; // ERROR "overflows"
|
|
b16a byte = 0 * 1000; // OK
|
|
b17 byte = byte(0) * byte(1000); // ERROR "overflows"
|
|
b18 byte = Uint8/0; // ERROR "division by zero"
|
|
|
|
c1 float64 = Big;
|
|
c2 float64 = Big*Big; // ERROR "overflows"
|
|
c3 float64 = float64(Big)*Big; // ERROR "overflows"
|
|
c4 = Big*Big; // ERROR "overflows"
|
|
c5 = Big/0; // ERROR "division by zero"
|
|
)
|
|
|
|
func f(int);
|
|
|
|
func main() {
|
|
f(Int8); // ERROR "convert"
|
|
f(Minus1); // ERROR "convert"
|
|
f(Uint8); // ERROR "convert"
|
|
f(Const); // OK
|
|
f(Float32); // ERROR "convert"
|
|
f(Float); // ERROR "convert"
|
|
f(ConstFloat); // ERROR "truncate"
|
|
f(ConstFloat - 0.5); // OK
|
|
f(Big); // ERROR "convert"
|
|
f(String); // ERROR "convert"
|
|
f(Bool); // ERROR "convert"
|
|
}
|