error: expected one of `>`, identifier, or lifetime, found `,` | |
--> $DIR/issue-20616-9.rs:46:15 | |
| | |
LL | type Type_9<T,,> = Box<T>; //~ error: expected one of `>`, identifier, or lifetime, found `,` | |
| ^ expected one of `>`, identifier, or lifetime here | |
error: aborting due to previous error | |