Files
moxa/_test/type25.go
Nicholas Wiersma 851444453c fix: assert switch type from valueT in struct case (#747)
* fix: switch type from valueT in struct case

In a struct case in type assertion, if the source is a valueT, we still need to take the struct type to allow method and field resolution.

* fix: handle all ptr structs as well
2020-07-06 15:09:48 +02:00

45 lines
600 B
Go

package main
import (
"errors"
"sync/atomic"
)
type wrappedError struct {
wrapped error
}
func (e wrappedError) Error() string {
return "some outer error"
}
func (e wrappedError) Unwrap() error {
return e.wrapped
}
var err atomic.Value
func getWrapped() *wrappedError {
if v := err.Load(); v != nil {
err := v.(wrappedError)
if err.wrapped != nil {
return &err
}
}
return nil
}
func main() {
err.Store(wrappedError{wrapped: errors.New("test")})
e := getWrapped()
if e != nil {
println(e.Error())
println(e.wrapped.Error())
}
}
// Output:
// some outer error
// test