diff options
Diffstat (limited to 'test/used.go')
| -rw-r--r-- | test/used.go | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/test/used.go b/test/used.go new file mode 100644 index 0000000..5bdc5a7 --- /dev/null +++ b/test/used.go @@ -0,0 +1,145 @@ +// errorcheck + +// Copyright 2020 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 p + +import "unsafe" + +const C = 1 + +var x, x1, x2 int +var b bool +var s string +var c chan int +var cp complex128 +var slice []int +var array [2]int +var bytes []byte +var runes []rune +var r rune + +func f0() {} +func f1() int { return 1 } +func f2() (int, int) { return 1, 1 } + +type T struct{ X int } + +func (T) M1() int { return 1 } +func (T) M0() {} +func (T) M() {} + +var t T +var tp *T + +type I interface{ M() } + +var i I + +var m map[int]int + +func _() { + // Note: if the next line changes to x, the error silences the x+x etc below! + x1 // ERROR "x1 .* not used" + + nil // ERROR "nil .* not used" + C // ERROR "C .* not used" + 1 // ERROR "1 .* not used" + x + x // ERROR "x \+ x .* not used" + x - x // ERROR "x - x .* not used" + x | x // ERROR "x \| x .* not used" + "a" + s // ERROR ".a. \+ s .* not used" + &x // ERROR "&x .* not used" + b && b // ERROR "b && b .* not used" + append(slice, 1) // ERROR "append\(slice, 1\) .* not used" + string(bytes) // ERROR "string\(bytes\) .* not used" + string(runes) // ERROR "string\(runes\) .* not used" + f0() // ok + f1() // ok + f2() // ok + _ = f0() // ERROR "f0\(\) .*used as value" + _ = f1() // ok + _, _ = f2() // ok + _ = f2() // ERROR "assignment mismatch: 1 variable but f2 returns 2 values|cannot assign" + _ = f1(), 0 // ERROR "assignment mismatch: 1 variable but 2 values|cannot assign" + T.M0 // ERROR "T.M0 .* not used" + t.M0 // ERROR "t.M0 .* not used" + cap // ERROR "use of builtin cap not in function call|must be called" + cap(slice) // ERROR "cap\(slice\) .* not used" + close(c) // ok + _ = close(c) // ERROR "close\(c\) .*used as value" + func() {} // ERROR "func literal .* not used|is not used" + X{} // ERROR "undefined: X" + map[string]int{} // ERROR "map\[string\]int{} .* not used" + struct{}{} // ERROR "struct ?{}{} .* not used" + [1]int{} // ERROR "\[1\]int{} .* not used" + []int{} // ERROR "\[\]int{} .* not used" + &struct{}{} // ERROR "&struct ?{}{} .* not used" + float32(x) // ERROR "float32\(x\) .* not used" + I(t) // ERROR "I\(t\) .* not used" + int(x) // ERROR "int\(x\) .* not used" + copy(slice, slice) // ok + _ = copy(slice, slice) // ok + delete(m, 1) // ok + _ = delete(m, 1) // ERROR "delete\(m, 1\) .*used as value" + t.X // ERROR "t.X .* not used" + tp.X // ERROR "tp.X .* not used" + t.M // ERROR "t.M .* not used" + I.M // ERROR "I.M .* not used" + i.(T) // ERROR "i.\(T\) .* not used" + x == x // ERROR "x == x .* not used" + x != x // ERROR "x != x .* not used" + x != x // ERROR "x != x .* not used" + x < x // ERROR "x < x .* not used" + x >= x // ERROR "x >= x .* not used" + x > x // ERROR "x > x .* not used" + *tp // ERROR "\*tp .* not used" + slice[0] // ERROR "slice\[0\] .* not used" + m[1] // ERROR "m\[1\] .* not used" + len(slice) // ERROR "len\(slice\) .* not used" + make(chan int) // ERROR "make\(chan int\) .* not used" + make(map[int]int) // ERROR "make\(map\[int\]int\) .* not used" + make([]int, 1) // ERROR "make\(\[\]int, 1\) .* not used" + x * x // ERROR "x \* x .* not used" + x / x // ERROR "x / x .* not used" + x % x // ERROR "x % x .* not used" + x << x // ERROR "x << x .* not used" + x >> x // ERROR "x >> x .* not used" + x & x // ERROR "x & x .* not used" + x &^ x // ERROR "x &\^ x .* not used" + new(int) // ERROR "new\(int\) .* not used" + !b // ERROR "!b .* not used" + ^x // ERROR "\^x .* not used" + +x // ERROR "\+x .* not used" + -x // ERROR "-x .* not used" + b || b // ERROR "b \|\| b .* not used" + panic(1) // ok + _ = panic(1) // ERROR "panic\(1\) .*used as value" + print(1) // ok + _ = print(1) // ERROR "print\(1\) .*used as value" + println(1) // ok + _ = println(1) // ERROR "println\(1\) .*used as value" + c <- 1 // ok + slice[1:1] // ERROR "slice\[1:1\] .* not used" + array[1:1] // ERROR "array\[1:1\] .* not used" + s[1:1] // ERROR "s\[1:1\] .* not used" + slice[1:1:1] // ERROR "slice\[1:1:1\] .* not used" + array[1:1:1] // ERROR "array\[1:1:1\] .* not used" + recover() // ok + <-c // ok + string(r) // ERROR "string\(r\) .* not used" + iota // ERROR "undefined: iota|cannot use iota" + real(cp) // ERROR "real\(cp\) .* not used" + imag(cp) // ERROR "imag\(cp\) .* not used" + complex(1, 2) // ERROR "complex\(1, 2\) .* not used" + unsafe.Alignof(t.X) // ERROR "unsafe.Alignof\(t.X\) .* not used" + unsafe.Offsetof(t.X) // ERROR "unsafe.Offsetof\(t.X\) .* not used" + unsafe.Sizeof(t) // ERROR "unsafe.Sizeof\(t\) .* not used" + _ = int // ERROR "type int is not an expression|not an expression" + (x) // ERROR "x .* not used|not used" + _ = new(x2) // ERROR "x2 is not a type|not a type" + // Disabled due to issue #43125. + // _ = new(1 + 1) // DISABLED "1 \+ 1 is not a type" +} |