// RUN: llgoi < %s | FileCheck %s

import "errors"
err := errors.New("foo")
// CHECK: err error {{.*}} = foo

err.(interface{Foo()})
// CHECK: panic: interface conversion

_, _ := err.(interface{Foo()})
// CHECK: #0 interface{Foo()} (<nil>) = <nil>
// CHECK: #1 bool = false

err.(interface{Error() string})
// CHECK: #0 interface{Error() string} {{.*}} = foo

_, _ := err.(interface{Error() string})
// CHECK: #0 interface{Error() string} {{.*}} = foo
// CHECK: #1 bool = true