You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
69 lines
975 B
69 lines
975 B
4 months ago
|
// errorcheck
|
||
|
|
|
||
|
|
// 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.
|
||
|
|
|
||
|
|
// Verify simple assignment errors are caught by the compiler.
|
||
|
|
// Does not compile.
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
import "sync"
|
||
|
|
|
||
|
|
type T struct {
|
||
|
|
int
|
||
|
|
sync.Mutex
|
||
|
|
}
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
{
|
||
|
|
var x, y sync.Mutex
|
||
|
|
x = y // ok
|
||
|
|
_ = x
|
||
|
|
}
|
||
|
|
{
|
||
|
|
var x, y T
|
||
|
|
x = y // ok
|
||
|
|
_ = x
|
||
|
|
}
|
||
|
|
{
|
||
|
|
var x, y [2]sync.Mutex
|
||
|
|
x = y // ok
|
||
|
|
_ = x
|
||
|
|
}
|
||
|
|
{
|
||
|
|
var x, y [2]T
|
||
|
|
x = y // ok
|
||
|
|
_ = x
|
||
|
|
}
|
||
|
|
{
|
||
|
|
x := sync.Mutex{0, 0} // ERROR "assignment.*Mutex"
|
||
|
|
_ = x
|
||
|
|
}
|
||
|
|
{
|
||
|
|
x := sync.Mutex{key: 0} // ERROR "(unknown|assignment).*Mutex"
|
||
|
|
_ = x
|
||
|
|
}
|
||
|
|
{
|
||
|
|
x := &sync.Mutex{} // ok
|
||
|
|
var y sync.Mutex // ok
|
||
|
|
y = *x // ok
|
||
|
|
*x = y // ok
|
||
|
|
_ = x
|
||
|
|
_ = y
|
||
|
|
}
|
||
|
|
{
|
||
|
|
var x = 1
|
||
|
|
{
|
||
|
|
x, x := 2, 3 // ERROR "x repeated on left side of :="
|
||
|
|
_ = x
|
||
|
|
}
|
||
|
|
_ = x
|
||
|
|
}
|
||
|
|
{
|
||
|
|
a, a := 1, 2 // ERROR "a repeated on left side of :="
|
||
|
|
_ = a
|
||
|
|
}
|
||
|
|
}
|