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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| linters-settings: | ||
| nonamedreturns: | ||
| allow-error-in-defer: true |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,225 @@ | ||
| // args: -Enonamedreturns | ||
| // config_path: testdata/configs/nonamedreturns.yml | ||
| package testdata | ||
|
|
||
| func simple() (err error) { | ||
| defer func() { | ||
| err = nil | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func twoReturnParams() (i int, err error) { // ERROR `named return "i" with type "int" found` | ||
| defer func() { | ||
| i = 0 | ||
| err = nil | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func allUnderscoresExceptError() (_ int, err error) { | ||
| defer func() { | ||
| err = nil | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func customName() (myName error) { | ||
| defer func() { | ||
| myName = nil | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func errorIsNoAssigned() (err error) { // ERROR `named return "err" with type "error" found` | ||
| defer func() { | ||
| _ = err | ||
| processError(err) | ||
| if err == nil { | ||
| } | ||
| switch err { | ||
| case nil: | ||
| default: | ||
| } | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func shadowVariable() (err error) { | ||
| defer func() { | ||
| err := 123 // linter doesn't understand that this is different variable (even if different type) (yet?) | ||
| _ = err | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func shadowVariable2() (err error) { | ||
| defer func() { | ||
| a, err := doSomething() // linter doesn't understand that this is different variable (yet?) | ||
| _ = a | ||
| _ = err | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| type myError = error // linter doesn't understand that this is the same type (yet?) | ||
|
|
||
| func customType() (err myError) { // ERROR `named return "err" with type "myError" found` | ||
| defer func() { | ||
| err = nil | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func notTheLast() (err error, _ int) { | ||
| defer func() { | ||
| err = nil | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func twoErrorsCombined() (err1, err2 error) { | ||
| defer func() { | ||
| err1 = nil | ||
| err2 = nil | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func twoErrorsSeparated() (err1 error, err2 error) { | ||
| defer func() { | ||
| err1 = nil | ||
| err2 = nil | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func errorSlice() (err []error) { // ERROR `named return "err" with type "\[\]error" found` | ||
| defer func() { | ||
| err = nil | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func deferWithVariable() (err error) { // ERROR `named return "err" with type "error" found` | ||
| f := func() { | ||
| err = nil | ||
| } | ||
| defer f() // linter can't catch closure passed via variable (yet?) | ||
| return | ||
| } | ||
|
|
||
| func uberMultierr() (err error) { // ERROR `named return "err" with type "error" found` | ||
| defer func() { | ||
| multierrAppendInto(&err, nil) // linter doesn't allow it (yet?) | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func deferInDefer() (err error) { | ||
| defer func() { | ||
| defer func() { | ||
| err = nil | ||
| }() | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func twoDefers() (err error) { | ||
| defer func() {}() | ||
| defer func() { | ||
| err = nil | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func callFunction() (err error) { | ||
| defer func() { | ||
| _, err = doSomething() | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func callFunction2() (err error) { | ||
| defer func() { | ||
| var a int | ||
| a, err = doSomething() | ||
| _ = a | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func deepInside() (err error) { | ||
| if true { | ||
| switch true { | ||
| case false: | ||
| for i := 0; i < 10; i++ { | ||
| go func() { | ||
| select { | ||
| default: | ||
| defer func() { | ||
| if true { | ||
| switch true { | ||
| case false: | ||
| for j := 0; j < 10; j++ { | ||
| go func() { | ||
| select { | ||
| default: | ||
| err = nil | ||
| } | ||
| }() | ||
| } | ||
| } | ||
| } | ||
| }() | ||
| } | ||
| }() | ||
| } | ||
| } | ||
| } | ||
| return | ||
| } | ||
|
|
||
| var goodFuncLiteral = func() (err error) { | ||
| defer func() { | ||
| err = nil | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| var badFuncLiteral = func() (err error) { // ERROR `named return "err" with type "error" found` | ||
| defer func() { | ||
| _ = err | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func funcLiteralInsideFunc() error { | ||
| do := func() (err error) { | ||
| defer func() { | ||
| err = nil | ||
| }() | ||
| return | ||
| } | ||
| return do() | ||
| } | ||
|
|
||
| type x struct{} | ||
|
|
||
| func (x) goodMethod() (err error) { | ||
| defer func() { | ||
| err = nil | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func (x) badMethod() (err error) { // ERROR `named return "err" with type "error" found` | ||
| defer func() { | ||
| _ = err | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func processError(error) {} | ||
| func doSomething() (int, error) { return 10, nil } | ||
| func multierrAppendInto(*error, error) bool { return false } // https://pkg.go.dev/go.uber.org/multierr#AppendInto |