wip lower impl trait to type args

2020-01-24 19:35:09 +01:00
parent 9dec65d3b1
commit 93aa166748
8 changed files with 97 additions and 14 deletions
--- a/crates/ra_hir_ty/src/lib.rs
+++ b/crates/ra_hir_ty/src/lib.rs
@@ -368,7 +368,7 @@ impl Substs {
    /// Return Substs that replace each parameter by itself (i.e. `Ty::Param`).
    pub(crate) fn identity(generic_params: &Generics) -> Substs {
        Substs(
-            generic_params.iter().map(|(idx, p)| Ty::Param { idx, name: p.name.clone() }).collect(),
+            generic_params.iter().map(|(idx, p)| Ty::Param { idx, name: p.name.clone().unwrap_or_else(Name::missing) }).collect(),
        )
    }