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// Copyright 2013 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 errors
// Testing precise operand formatting in error messages
// (matching messages are regular expressions, hence the \'s).
func f(x int, m map[string]int) {
// no values
_ = f /* ERROR "f\(0, m\) \(no value\) used as value" */ (0, m)
// built-ins
_ = println /* ERROR "println \(built-in\) must be called" */
// types
_ = complex128 /* ERROR "complex128 \(type\) is not an expression" */
// constants
const c1 = 991
const c2 float32 = 0.5
0 /* ERROR "0 \(untyped int constant\) is not used" */
c1 /* ERROR "c1 \(untyped int constant 991\) is not used" */
c2 /* ERROR "c2 \(constant 0.5 of type float32\) is not used" */
c1 /* ERROR "c1 \+ c2 \(constant 991.5 of type float32\) is not used" */ + c2
// variables
x /* ERROR "x \(variable of type int\) is not used" */
// values
x /* ERROR "x != x \(untyped bool value\) is not used" */ != x
x /* ERROR "x \+ x \(value of type int\) is not used" */ + x
// value, ok's
const s = "foo"
m /* ERROR "m\[s\] \(map index expression of type int\) is not used" */ [s]
}
// Valid ERROR comments can have a variety of forms.
func _() {
0 /* ERROR "0 .* is not used" */
0 /* ERROR 0 .* is not used */
0 // ERROR "0 .* is not used"
0 // ERROR 0 .* is not used
}
// Don't report spurious errors as a consequence of earlier errors.
// Add more tests as needed.
func _() {
if err := foo /* ERROR undeclared */ (); err != nil /* no error here */ {}
}
// Use unqualified names for package-local objects.
type T struct{}
var _ int = T /* ERROR value of type T */ {} // use T in error message rather then errors.T
// Don't report errors containing "invalid type" (issue #24182).
func _(x *missing /* ERROR undeclared name: missing */ ) {
x.m() // there shouldn't be an error here referring to *invalid type
}
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