| error: expected one of `>`, a const expression, lifetime, or type, found `,` | |
| --> $DIR/issue-20616-7.rs:28:22 | |
| | | |
| LL | type Type_7 = Box<(),,>; | |
| | ^ expected one of `>`, a const expression, lifetime, or type | |
| | | |
| help: you might have meant to end the type parameters here | |
| | | |
| LL | type Type_7 = Box<()>,,>; | |
| | + | |
| error: aborting due to 1 previous error | |