Adding upstream version 1.20.14.upstream/1.20.14upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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"
+}