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68 lines
1.4 KiB
68 lines
1.4 KiB
4 months ago
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// errorcheck
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test that incorrect short declarations and redeclarations are detected.
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// Does not compile.
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package main
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func f1() int { return 1 }
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func f2() (float32, int) { return 1, 2 }
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func f3() (float32, int, string) { return 1, 2, "3" }
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func main() {
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{
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// simple redeclaration
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i := f1()
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i := f1() // ERROR "redeclared|no new"
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_ = i
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}
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{
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// change of type for f
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i, f, s := f3()
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f, g, t := f3() // ERROR "redeclared|cannot assign|incompatible"
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_, _, _, _, _ = i, f, s, g, t
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}
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{
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// change of type for i
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i, f, s := f3()
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j, i, t := f3() // ERROR "redeclared|cannot assign|incompatible"
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_, _, _, _, _ = i, f, s, j, t
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}
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{
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// no new variables
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i, f, s := f3()
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i, f := f2() // ERROR "redeclared|no new"
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_, _, _ = i, f, s
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}
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{
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// multiline no new variables
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i := f1
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i := func() int { // ERROR "redeclared|no new|incompatible"
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return 0
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}
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_ = i
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}
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{
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// single redeclaration
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i, f, s := f3()
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i := 1 // ERROR "redeclared|no new|incompatible"
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_, _, _ = i, f, s
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}
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// double redeclaration
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{
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i, f, s := f3()
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i, f := f2() // ERROR "redeclared|no new"
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_, _, _ = i, f, s
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}
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{
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// triple redeclaration
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i, f, s := f3()
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i, f, s := f3() // ERROR "redeclared|no new"
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_, _, _ = i, f, s
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}
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}
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