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go/types, types2: use "and not used" instead of "but not used" in error messages

This matches longstanding compiler behavior.

Also, for unused packages, report:

`"pkg" imported and not used`
`"pkg" imported as X and not used`

This matches the other `X declared and not used` errors.

For #55326.

Change-Id: Ie71cf662fb5f4648449c64fc51bede298a1bdcbf
Reviewed-on: https://go-review.googlesource.com/c/go/+/432557
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
This commit is contained in:
Robert Griesemer 2022-09-21 14:25:34 -07:00 committed by Gopher Robot
parent 871a3a409a
commit 4360fd8d6f
36 changed files with 110 additions and 118 deletions

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@ -142,7 +142,7 @@ func (check *Checker) initVar(lhs *Var, x *operand, context string) Type {
}
// Note: This was reverted in go/types (https://golang.org/cl/292751).
// TODO(gri): decide what to do (also affects test/run.go exclusion list)
lhs.used = true // avoid follow-on "declared but not used" errors
lhs.used = true // avoid follow-on "declared and not used" errors
return nil
}
@ -163,7 +163,7 @@ func (check *Checker) initVar(lhs *Var, x *operand, context string) Type {
check.assignment(x, lhs.typ, context)
if x.mode == invalid {
lhs.used = true // avoid follow-on "declared but not used" errors
lhs.used = true // avoid follow-on "declared and not used" errors
return nil
}
@ -325,7 +325,7 @@ func (check *Checker) initVars(lhs []*Var, orig_rhs []syntax.Expr, returnStmt sy
if len(lhs) != len(rhs) {
// invalidate lhs
for _, obj := range lhs {
obj.used = true // avoid declared but not used errors
obj.used = true // avoid declared and not used errors
if obj.typ == nil {
obj.typ = Typ[Invalid]
}
@ -382,7 +382,7 @@ func (check *Checker) initVars(lhs []*Var, orig_rhs []syntax.Expr, returnStmt sy
}
}
// avoid follow-on "declared but not used" errors if any initialization failed
// avoid follow-on "declared and not used" errors if any initialization failed
if !ok {
for _, lhs := range lhs {
lhs.used = true
@ -425,7 +425,7 @@ func (check *Checker) assignVars(lhs, orig_rhs []syntax.Expr) {
}
}
// avoid follow-on "declared but not used" errors if any assignment failed
// avoid follow-on "declared and not used" errors if any assignment failed
if !ok {
// don't call check.use to avoid re-evaluation of the lhs expressions
for _, lhs := range lhs {

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@ -1154,7 +1154,7 @@ const (
// }
_MisplacedLabel
// _UnusedLabel occurs when a label is declared but not used.
// _UnusedLabel occurs when a label is declared and not used.
//
// Example:
// func f() {

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@ -285,11 +285,11 @@ func TestIssue22525(t *testing.T) {
conf := Config{Error: func(err error) { got += err.Error() + "\n" }}
conf.Check(f.PkgName.Value, []*syntax.File{f}, nil) // do not crash
want := `
:1:27: a declared but not used
:1:30: b declared but not used
:1:33: c declared but not used
:1:36: d declared but not used
:1:39: e declared but not used
:1:27: a declared and not used
:1:30: b declared and not used
:1:33: c declared and not used
:1:36: d declared and not used
:1:39: e declared and not used
`
if got != want {
t.Errorf("got: %swant: %s", got, want)

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@ -38,7 +38,7 @@ func (check *Checker) labels(body *syntax.BlockStmt) {
for name, obj := range all.elems {
obj = resolve(name, obj)
if lbl := obj.(*Label); !lbl.used {
check.softErrorf(lbl.pos, _UnusedLabel, "label %s declared but not used", lbl.name)
check.softErrorf(lbl.pos, _UnusedLabel, "label %s declared and not used", lbl.name)
}
}
}

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@ -727,17 +727,9 @@ func (check *Checker) errorUnusedPkg(obj *PkgName) {
elem = elem[i+1:]
}
if obj.name == "" || obj.name == "." || obj.name == elem {
if check.conf.CompilerErrorMessages {
check.softErrorf(obj, _UnusedImport, "imported and not used: %q", path)
} else {
check.softErrorf(obj, _UnusedImport, "%q imported but not used", path)
}
check.softErrorf(obj, _UnusedImport, "%q imported and not used", path)
} else {
if check.conf.CompilerErrorMessages {
check.softErrorf(obj, _UnusedImport, "imported and not used: %q as %s", path, obj.name)
} else {
check.softErrorf(obj, _UnusedImport, "%q imported but not used as %s", path, obj.name)
}
check.softErrorf(obj, _UnusedImport, "%q imported as %s and not used", path, obj.name)
}
}

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@ -66,7 +66,7 @@ func (check *Checker) usage(scope *Scope) {
return unused[i].pos.Cmp(unused[j].pos) < 0
})
for _, v := range unused {
check.softErrorf(v.pos, _UnusedVar, "%s declared but not used", v.name)
check.softErrorf(v.pos, _UnusedVar, "%s declared and not used", v.name)
}
for _, scope := range scope.children {
@ -741,7 +741,7 @@ func (check *Checker) typeSwitchStmt(inner stmtContext, s *syntax.SwitchStmt, gu
if lhs.Value == "_" {
// _ := x.(type) is an invalid short variable declaration
check.softErrorf(lhs, _NoNewVar, "no new variable on left side of :=")
lhs = nil // avoid declared but not used error below
lhs = nil // avoid declared and not used error below
} else {
check.recordDef(lhs, nil) // lhs variable is implicitly declared in each cause clause
}
@ -802,7 +802,7 @@ func (check *Checker) typeSwitchStmt(inner stmtContext, s *syntax.SwitchStmt, gu
}
check.declare(check.scope, nil, obj, scopePos)
check.recordImplicit(clause, obj)
// For the "declared but not used" error, all lhs variables act as
// For the "declared and not used" error, all lhs variables act as
// one; i.e., if any one of them is 'used', all of them are 'used'.
// Collect them for later analysis.
lhsVars = append(lhsVars, obj)
@ -824,7 +824,7 @@ func (check *Checker) typeSwitchStmt(inner stmtContext, s *syntax.SwitchStmt, gu
v.used = true // avoid usage error when checking entire function
}
if !used {
check.softErrorf(lhs, _UnusedVar, "%s declared but not used", lhs.Value)
check.softErrorf(lhs, _UnusedVar, "%s declared and not used", lhs.Value)
}
}
}

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@ -320,7 +320,7 @@ func (check *Checker) initVars(lhs []*Var, origRHS []ast.Expr, returnStmt ast.St
if len(lhs) != len(rhs) {
// invalidate lhs
for _, obj := range lhs {
obj.used = true // avoid declared but not used errors
obj.used = true // avoid declared and not used errors
if obj.typ == nil {
obj.typ = Typ[Invalid]
}

View File

@ -1154,7 +1154,7 @@ const (
// }
_MisplacedLabel
// _UnusedLabel occurs when a label is declared but not used.
// _UnusedLabel occurs when a label is declared and not used.
//
// Example:
// func f() {

View File

@ -288,11 +288,11 @@ func TestIssue22525(t *testing.T) {
conf := Config{Error: func(err error) { got += err.Error() + "\n" }}
conf.Check(f.Name.Name, fset, []*ast.File{f}, nil) // do not crash
want := `
1:27: a declared but not used
1:30: b declared but not used
1:33: c declared but not used
1:36: d declared but not used
1:39: e declared but not used
1:27: a declared and not used
1:30: b declared and not used
1:33: c declared and not used
1:36: d declared and not used
1:39: e declared and not used
`
if got != want {
t.Errorf("got: %swant: %s", got, want)

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@ -39,7 +39,7 @@ func (check *Checker) labels(body *ast.BlockStmt) {
for name, obj := range all.elems {
obj = resolve(name, obj)
if lbl := obj.(*Label); !lbl.used {
check.softErrorf(lbl, _UnusedLabel, "label %s declared but not used", lbl.name)
check.softErrorf(lbl, _UnusedLabel, "label %s declared and not used", lbl.name)
}
}
}

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@ -69,11 +69,11 @@ func (check *Checker) arityMatch(s, init *ast.ValueSpec) {
// init exprs from s
n := s.Values[l]
check.errorf(n, code, "extra init expr %s", n)
// TODO(gri) avoid declared but not used error here
// TODO(gri) avoid declared and not used error here
} else {
// init exprs "inherited"
check.errorf(s, code, "extra init expr at %s", check.fset.Position(init.Pos()))
// TODO(gri) avoid declared but not used error here
// TODO(gri) avoid declared and not used error here
}
case l > r && (init != nil || r != 1):
n := s.Names[r]
@ -706,9 +706,9 @@ func (check *Checker) errorUnusedPkg(obj *PkgName) {
elem = elem[i+1:]
}
if obj.name == "" || obj.name == "." || obj.name == elem {
check.softErrorf(obj, _UnusedImport, "%q imported but not used", path)
check.softErrorf(obj, _UnusedImport, "%q imported and not used", path)
} else {
check.softErrorf(obj, _UnusedImport, "%q imported but not used as %s", path, obj.name)
check.softErrorf(obj, _UnusedImport, "%q imported as %s and not used", path, obj.name)
}
}

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@ -67,7 +67,7 @@ func (check *Checker) usage(scope *Scope) {
return unused[i].pos < unused[j].pos
})
for _, v := range unused {
check.softErrorf(v, _UnusedVar, "%s declared but not used", v.name)
check.softErrorf(v, _UnusedVar, "%s declared and not used", v.name)
}
for _, scope := range scope.children {
@ -666,7 +666,7 @@ func (check *Checker) stmt(ctxt stmtContext, s ast.Stmt) {
if lhs.Name == "_" {
// _ := x.(type) is an invalid short variable declaration
check.softErrorf(lhs, _NoNewVar, "no new variable on left side of :=")
lhs = nil // avoid declared but not used error below
lhs = nil // avoid declared and not used error below
} else {
check.recordDef(lhs, nil) // lhs variable is implicitly declared in each cause clause
}
@ -731,7 +731,7 @@ func (check *Checker) stmt(ctxt stmtContext, s ast.Stmt) {
}
check.declare(check.scope, nil, obj, scopePos)
check.recordImplicit(clause, obj)
// For the "declared but not used" error, all lhs variables act as
// For the "declared and not used" error, all lhs variables act as
// one; i.e., if any one of them is 'used', all of them are 'used'.
// Collect them for later analysis.
lhsVars = append(lhsVars, obj)
@ -750,7 +750,7 @@ func (check *Checker) stmt(ctxt stmtContext, s ast.Stmt) {
v.used = true // avoid usage error when checking entire function
}
if !used {
check.softErrorf(lhs, _UnusedVar, "%s declared but not used", lhs.Name)
check.softErrorf(lhs, _UnusedVar, "%s declared and not used", lhs.Name)
}
}
@ -819,7 +819,7 @@ func (check *Checker) stmt(ctxt stmtContext, s ast.Stmt) {
check.softErrorf(s, _InvalidPostDecl, "cannot declare in post statement")
// Don't call useLHS here because we want to use the lhs in
// this erroneous statement so that we don't get errors about
// these lhs variables being declared but not used.
// these lhs variables being declared and not used.
check.use(s.Lhs...) // avoid follow-up errors
}
check.stmt(inner, s.Body)

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@ -13,16 +13,16 @@ import (
init /* ERROR "cannot import package as init" */ "fmt"
// reflect defines a type "flag" which shows up in the gc export data
"reflect"
. /* ERROR "imported but not used" */ "reflect"
. /* ERROR "imported and not used" */ "reflect"
)
import "math" /* ERROR "imported but not used" */
import m /* ERROR "imported but not used as m" */ "math"
import "math" /* ERROR "imported and not used" */
import m /* ERROR "imported as m and not used" */ "math"
import _ "math"
import (
"math/big" /* ERROR "imported but not used" */
b /* ERROR "imported but not used" */ "math/big"
"math/big" /* ERROR "imported and not used" */
b /* ERROR "imported as b and not used" */ "math/big"
_ "math/big"
)

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@ -8,7 +8,7 @@ import "math"
import m "math"
import . "testing" // declares T in file scope
import . /* ERROR .unsafe. imported but not used */ "unsafe"
import . /* ERROR .unsafe. imported and not used */ "unsafe"
import . "fmt" // declares Println in file scope
import (

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@ -4,7 +4,7 @@
package importdecl1
import . /* ERROR .unsafe. imported but not used */ "unsafe"
import . /* ERROR .unsafe. imported and not used */ "unsafe"
type B interface {
A

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@ -204,7 +204,7 @@ func issue15755() {
_ = v
}
// Test that we don't get "declared but not used"
// Test that we don't get "declared and not used"
// errors in the context of invalid/C objects.
func issue20358() {
var F C /* ERROR "undefined" */ .F

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@ -10,19 +10,19 @@ package labels
var x int
func f0() {
L1 /* ERROR "label L1 declared but not used" */ :
L1 /* ERROR "label L1 declared and not used" */ :
for {
}
L2 /* ERROR "label L2 declared but not used" */ :
L2 /* ERROR "label L2 declared and not used" */ :
select {
}
L3 /* ERROR "label L3 declared but not used" */ :
L3 /* ERROR "label L3 declared and not used" */ :
switch {
}
L4 /* ERROR "label L4 declared but not used" */ :
L4 /* ERROR "label L4 declared and not used" */ :
if true {
}
L5 /* ERROR "label L5 declared but not used" */ :
L5 /* ERROR "label L5 declared and not used" */ :
f0()
L6:
f0()
@ -41,7 +41,7 @@ L7:
// A label must be directly associated with a switch, select, or
// for statement; it cannot be the label of a labeled statement.
L7a /* ERROR "declared but not used" */ : L7b:
L7a /* ERROR "declared and not used" */ : L7b:
for {
break L7a /* ERROR "invalid break label L7a" */
continue L7a /* ERROR "invalid continue label L7a" */
@ -60,7 +60,7 @@ L9:
switch {
case true:
break L9
defalt /* ERROR "label defalt declared but not used" */ :
defalt /* ERROR "label defalt declared and not used" */ :
}
L10:
@ -157,7 +157,7 @@ L5:
// Additional tests not in the original files.
func f2() {
L1 /* ERROR "label L1 declared but not used" */ :
L1 /* ERROR "label L1 declared and not used" */ :
if x == 0 {
for {
continue L1 /* ERROR "invalid continue label L1" */

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@ -222,7 +222,7 @@ func selects() {
ch2 := make(chan int)
select {
case <-ch1:
var ch2 /* ERROR ch2 declared but not used */ chan bool
var ch2 /* ERROR ch2 declared and not used */ chan bool
case i := <-ch2:
print(i + 1)
}
@ -688,7 +688,7 @@ func typeswitches() {
default /* ERROR "multiple defaults" */ :
}
switch x /* ERROR "declared but not used" */ := x.(type) {}
switch x /* ERROR "declared and not used" */ := x.(type) {}
switch _ /* ERROR "no new variable on left side of :=" */ := x.(type) {}
switch x := x.(type) {
@ -697,7 +697,7 @@ func typeswitches() {
_ = y
}
switch x /* ERROR "x declared but not used" */ := i /* ERROR "not an interface" */ .(type) {}
switch x /* ERROR "x declared and not used" */ := i /* ERROR "not an interface" */ .(type) {}
switch t := x.(type) {
case nil:
@ -950,7 +950,7 @@ func issue6766b() {
// the loop body is still type-checked (and thus
// errors reported).
func issue10148() {
for y /* ERROR declared but not used */ := range "" {
for y /* ERROR declared and not used */ := range "" {
_ = "" /* ERROR mismatched types untyped string and untyped int */ + 1
}
for range 1 /* ERROR cannot range over 1 */ {

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@ -64,45 +64,45 @@ var (
// Variables declared in function bodies must be 'used'.
type T struct{}
func (r T) _(a, b, c int) (u, v, w int) {
var x1 /* ERROR "declared but not used" */ int
var x2 /* ERROR "declared but not used" */ int
var x1 /* ERROR "declared and not used" */ int
var x2 /* ERROR "declared and not used" */ int
x1 = 1
(x2) = 2
y1 /* ERROR "declared but not used" */ := 1
y2 /* ERROR "declared but not used" */ := 2
y1 /* ERROR "declared and not used" */ := 1
y2 /* ERROR "declared and not used" */ := 2
y1 = 1
(y1) = 2
{
var x1 /* ERROR "declared but not used" */ int
var x2 /* ERROR "declared but not used" */ int
var x1 /* ERROR "declared and not used" */ int
var x2 /* ERROR "declared and not used" */ int
x1 = 1
(x2) = 2
y1 /* ERROR "declared but not used" */ := 1
y2 /* ERROR "declared but not used" */ := 2
y1 /* ERROR "declared and not used" */ := 1
y2 /* ERROR "declared and not used" */ := 2
y1 = 1
(y1) = 2
}
if x /* ERROR "declared but not used" */ := 0; a < b {}
if x /* ERROR "declared and not used" */ := 0; a < b {}
switch x /* ERROR "declared but not used" */, y := 0, 1; a {
switch x /* ERROR "declared and not used" */, y := 0, 1; a {
case 0:
_ = y
case 1:
x /* ERROR "declared but not used" */ := 0
x /* ERROR "declared and not used" */ := 0
}
var t interface{}
switch t /* ERROR "declared but not used" */ := t.(type) {}
switch t /* ERROR "declared and not used" */ := t.(type) {}
switch t /* ERROR "declared but not used" */ := t.(type) {
switch t /* ERROR "declared and not used" */ := t.(type) {
case int:
}
switch t /* ERROR "declared but not used" */ := t.(type) {
switch t /* ERROR "declared and not used" */ := t.(type) {
case int:
case float32, complex64:
t = nil
@ -123,9 +123,9 @@ func (r T) _(a, b, c int) (u, v, w int) {
}
}
switch t := t; t /* ERROR "declared but not used" */ := t.(type) {}
switch t := t; t /* ERROR "declared and not used" */ := t.(type) {}
var z1 /* ERROR "declared but not used" */ int
var z1 /* ERROR "declared and not used" */ int
var z2 int
_ = func(a, b, c int) (u, v, w int) {
z1 = a
@ -135,12 +135,12 @@ func (r T) _(a, b, c int) (u, v, w int) {
}
var s []int
var i /* ERROR "declared but not used" */ , j int
var i /* ERROR "declared and not used" */ , j int
for i, j = range s {
_ = j
}
for i, j /* ERROR "declared but not used" */ := range s {
for i, j /* ERROR "declared and not used" */ := range s {
_ = func() int {
return i
}
@ -151,12 +151,12 @@ func (r T) _(a, b, c int) (u, v, w int) {
// Unused variables in function literals must lead to only one error (issue #22524).
func _() {
_ = func() {
var x /* ERROR declared but not used */ int
var x /* ERROR declared and not used */ int
}
}
// Invalid variable declarations must not lead to "declared but not used errors".
// TODO(gri) enable these tests once go/types follows types2 logic for declared but not used variables
// Invalid variable declarations must not lead to "declared and not used errors".
// TODO(gri) enable these tests once go/types follows types2 logic for declared and not used variables
// func _() {
// var a x // DISABLED_ERROR undefined: x
// var b = x // DISABLED_ERROR undefined: x
@ -164,10 +164,10 @@ func _() {
// var d, e, f x /* DISABLED_ERROR x */ /* DISABLED_ERROR x */ /* DISABLED_ERROR x */
// var g, h, i = x, x, x /* DISABLED_ERROR x */ /* DISABLED_ERROR x */ /* DISABLED_ERROR x */
// var j, k, l float32 = x, x, x /* DISABLED_ERROR x */ /* DISABLED_ERROR x */ /* DISABLED_ERROR x */
// // but no "declared but not used" errors
// // but no "declared and not used" errors
// }
// Invalid (unused) expressions must not lead to spurious "declared but not used errors".
// Invalid (unused) expressions must not lead to spurious "declared and not used errors".
func _() {
var a, b, c int
var x, y int

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@ -42,7 +42,7 @@ func _() { var _ = new(foo9[int]) }
var u /* ERROR cycle */ , i [func /* ERROR used as value */ /* ERROR used as value */ (u, c /* ERROR undefined */ /* ERROR undefined */ ) {}(0, len /* ERROR must be called */ /* ERROR must be called */ )]c /* ERROR undefined */ /* ERROR undefined */
// crash 15
func y15() { var a /* ERROR declared but not used */ interface{ p() } = G15[string]{} }
func y15() { var a /* ERROR declared and not used */ interface{ p() } = G15[string]{} }
type G15[X any] s /* ERROR undefined */
func (G15 /* ERROR generic type .* without instantiation */ ) p()

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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Ensure there is no "imported but not used" error
// Ensure there is no "imported and not used" error
// if a package wasn't imported in the first place.
package p

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@ -9,7 +9,7 @@
package foo
func f(x interface{}) {
switch t := x.(type) { // ERROR "declared but not used"
switch t := x.(type) { // ERROR "declared and not used"
case int:
}
}

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@ -5,7 +5,7 @@
// license that can be found in the LICENSE file.
// Issue 3899: 8g incorrectly thinks a variable is
// "set but not used" and elides an assignment, causing
// "set and not used" and elides an assignment, causing
// variables to end up with wrong data.
//
// The reason is a miscalculation of variable width.

View File

@ -11,7 +11,7 @@ package p
func f() {
select {
case x, x := <-func() chan int { // ERROR "x repeated on left side of :=|redefinition|declared but not used"
case x, x := <-func() chan int { // ERROR "x repeated on left side of :=|redefinition|declared and not used"
c := make(chan int)
return c
}():

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@ -10,7 +10,7 @@
package main
import "math" // ERROR "imported and not used|imported but not used"
import "math" // ERROR "imported and not used"
func main() {
math:

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@ -10,12 +10,12 @@
package p
func _() {
if a := 10 { // ERROR "cannot use a := 10 as value|expected .*;|declared but not used"
if a := 10 { // ERROR "cannot use a := 10 as value|expected .*;|declared and not used"
}
for b := 10 { // ERROR "cannot use b := 10 as value|parse error|declared but not used"
for b := 10 { // ERROR "cannot use b := 10 as value|parse error|declared and not used"
}
switch c := 10 { // ERROR "cannot use c := 10 as value|expected .*;|declared but not used"
switch c := 10 { // ERROR "cannot use c := 10 as value|expected .*;|declared and not used"
}
}

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@ -19,7 +19,7 @@ func F() {
const x = 1
func G() {
switch t := x.(type) { // ERROR "cannot type switch on non-interface value|declared but not used|not an interface"
switch t := x.(type) { // ERROR "cannot type switch on non-interface value|declared and not used|not an interface"
default:
}
}

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@ -44,8 +44,8 @@ func main() {
log.Fatalf("expected cmd/compile to fail")
}
wantErrs := []string{
"7:9: n declared but not used",
"7:12: err declared but not used",
"7:9: n declared and not used",
"7:12: err declared and not used",
}
outStr := string(out)
for _, want := range wantErrs {

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@ -15,7 +15,7 @@ func main() {
i1 := it{Floats: true}
if i1.floats { // ERROR "(type it .* field or method floats, but does have Floats)|undefined field or method"
}
i2 := &it{floats: false} // ERROR "(but does have Floats)|unknown field|declared but not used"
i2 := &it{floats: false} // ERROR "(but does have Floats)|unknown field|declared and not used"
_ = &it{InneR: "foo"} // ERROR "(but does have inner)|unknown field"
_ = i2
}

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@ -10,6 +10,6 @@ func f(x interface{}) {
switch x.(type) {
}
switch t := x.(type) { // ERROR "declared but not used"
switch t := x.(type) { // ERROR "declared and not used"
}
}

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@ -7,7 +7,7 @@
// Test that we type-check deferred/go functions even
// if they are not called (a common error). Specifically,
// we don't want to see errors such as import or variable
// declared but not used.
// declared and not used.
package p

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@ -10,5 +10,5 @@
package main
func _() {
x := 7 // ERROR ".*x.* declared but not used"
x := 7 // ERROR ".*x.* declared and not used"
}

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@ -1,12 +1,12 @@
package p
import (
"./a" // ERROR "imported and not used: \x22test/a\x22 as surprise|imported and not used: surprise"
"./b" // ERROR "imported and not used: \x22test/b\x22 as surprise2|imported and not used: surprise2"
b "./b" // ERROR "imported and not used: \x22test/b\x22$|imported and not used: surprise2"
foo "math" // ERROR "imported and not used: \x22math\x22 as foo|imported and not used: math"
"./a" // ERROR "imported and not used: \x22test/a\x22 as surprise|imported and not used: surprise|\x22test/a\x22 imported as surprise and not used"
"./b" // ERROR "imported and not used: \x22test/b\x22 as surprise2|imported and not used: surprise2|\x22test/b\x22 imported as surprise2 and not used"
b "./b" // ERROR "imported and not used: \x22test/b\x22$|imported and not used: surprise2|\x22test/b\x22 imported and not used"
foo "math" // ERROR "imported and not used: \x22math\x22 as foo|imported and not used: math|\x22math\x22 imported as foo and not used"
"fmt" // actually used
"strings" // ERROR "imported and not used: \x22strings\x22|imported and not used: strings"
"strings" // ERROR "imported and not used: \x22strings\x22|imported and not used: strings|\x22strings\x22 imported and not used"
)
var _ = fmt.Printf

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@ -10,10 +10,10 @@
package main
import "bufio" // ERROR "previous|not used"
import bufio "os" // ERROR "redeclared|redefinition|incompatible" "imported and not used"
import bufio "os" // ERROR "redeclared|redefinition|incompatible" "imported and not used|imported as bufio and not used"
import (
"fmt" // ERROR "previous|not used"
fmt "math" // ERROR "redeclared|redefinition|incompatible" "imported and not used: \x22math\x22 as fmt"
. "math" // GC_ERROR "imported and not used: \x22math\x22$"
fmt "math" // ERROR "redeclared|redefinition|incompatible" "imported and not used: \x22math\x22 as fmt|imported as fmt and not used"
. "math" // GC_ERROR "imported and not used: \x22math\x22$|imported and not used"
)

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@ -9,16 +9,16 @@
package main
// standard
import "fmt" // ERROR "imported and not used.*fmt"
import "fmt" // ERROR "imported and not used.*fmt|\x22fmt\x22 imported and not used"
// renamed
import X "math" // ERROR "imported and not used.*math"
import X "math" // ERROR "imported and not used.*math|\x22math\x22 imported as X and not used"
// import dot
import . "bufio" // ERROR "imported and not used.*bufio"
import . "bufio" // ERROR "imported and not used.*bufio|imported and not used"
// again, package without anything in it
import "./empty" // ERROR "imported and not used.*empty"
import Z "./empty" // ERROR "imported and not used.*empty"
import . "./empty" // ERROR "imported and not used.*empty"
import "./empty" // ERROR "imported and not used.*empty|imported and not used"
import Z "./empty" // ERROR "imported and not used.*empty|imported as Z and not used"
import . "./empty" // ERROR "imported and not used.*empty|imported and not used"

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@ -11,9 +11,9 @@ package main
func notused(x interface{}) {
// The first t is in a different scope than the 2nd t; it cannot
// be accessed (=> declared but not used error); but it is legal
// be accessed (=> declared and not used error); but it is legal
// to declare it.
switch t := 0; t := x.(type) { // ERROR "declared but not used"
switch t := 0; t := x.(type) { // ERROR "declared and not used"
case int:
_ = t // this is using the t of "t := x.(type)"
}