| error[E0412]: cannot find type `UndefinedType` in this scope | |
| --> $DIR/error-is-freeze.rs:4:17 | |
| | | |
| LL | foo: Option<UndefinedType>, | |
| | ^^^^^^^^^^^^^ not found in this scope | |
| | | |
| help: you might be missing a type parameter | |
| | | |
| LL | struct MyStruct<UndefinedType> { | |
| | +++++++++++++++ | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0412`. |