/
wastedassign.go
154 lines (138 loc) · 2.88 KB
/
wastedassign.go
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//args: -Ewastedassign
package testdata
import "strings"
func pa(x int) int {
return x + 1
}
func multiple(val interface{}, times uint) interface{} {
switch hogehoge := val.(type) {
case int:
return 12
case string:
return strings.Repeat(hogehoge, int(times))
default:
return nil
}
}
func noUseParams(params string) int {
a := 12
println(a)
return a
}
func f(param int) int {
println(param)
useOutOfIf := 1212121 // ERROR "reassigned, but reassigned without using the value"
ret := 0
if false {
useOutOfIf = 200 // ERROR "reassigned, but never used afterwards"
return 0
} else if param == 100 {
useOutOfIf = 100 // ERROR "reassigned, but reassigned without using the value"
useOutOfIf = 201
useOutOfIf = pa(useOutOfIf)
useOutOfIf += 200 // ERROR "reassigned, but reassigned without using the value"
} else {
useOutOfIf = 100
useOutOfIf += 100
useOutOfIf = pa(useOutOfIf)
useOutOfIf += 200 // ERROR "reassigned, but reassigned without using the value"
}
if false {
useOutOfIf = 200 // ERROR "reassigned, but never used afterwards"
return 0
} else if param == 200 {
useOutOfIf = 100 // ERROR "reassigned, but reassigned without using the value"
useOutOfIf = 201
useOutOfIf = pa(useOutOfIf)
useOutOfIf += 200
} else {
useOutOfIf = 100
useOutOfIf += 100
useOutOfIf = pa(useOutOfIf)
useOutOfIf += 200
}
// useOutOfIf = 12
println(useOutOfIf)
useOutOfIf = 192
useOutOfIf += 100
useOutOfIf += 200 // ERROR "reassigned, but never used afterwards"
return ret
}
func checkLoopTest() int {
hoge := 12
noUse := 1111
println(noUse)
noUse = 1111 // ERROR "reassigned, but never used afterwards"
for {
if hoge == 14 {
break
}
hoge = hoge + 1
}
return hoge
}
func r(param int) int {
println(param)
useOutOfIf := 1212121
ret := 0
if false {
useOutOfIf = 200 // ERROR "reassigned, but never used afterwards"
return 0
} else if param == 100 {
ret = useOutOfIf
} else if param == 200 {
useOutOfIf = 100 // ERROR "reassigned, but reassigned without using the value"
useOutOfIf = 100
useOutOfIf = pa(useOutOfIf)
useOutOfIf += 200 // ERROR "reassigned, but reassigned without using the value"
}
useOutOfIf = 12
println(useOutOfIf)
useOutOfIf = 192
useOutOfIf += 100
useOutOfIf += 200 // ERROR "reassigned, but never used afterwards"
return ret
}
func mugen() {
var i int
var hoge int
for {
hoge = 5 // ERROR "reassigned, but reassigned without using the value"
// break
}
println(i)
println(hoge)
return
}
func noMugen() {
var i int
var hoge int
for {
hoge = 5
break
}
println(i)
println(hoge)
return
}
func reassignInsideLoop() {
bar := func(b []byte) ([]byte, error) { return b, nil }
var err error
var rest []byte
for {
rest, err = bar(rest)
if err == nil {
break
}
}
return
}
func reassignInsideLoop2() {
var x int = 0
var y int = 1
for i := 1; i < 3; i++ {
x += y
y *= 2 * i
}
println(x)
}