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fix a few more typeck normalization cases

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I'll like @nikomatsakis or someone to look at the unsolved variable
case.
This commit is contained in:
Ariel Ben-Yehuda
2017-03-01 03:39:43 +02:00
parent 34ff9aa83f
commit 2ecbc22856
1 changed files with 7 additions and 2 deletions
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9
src/librustc_typeck/check/mod.rs
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@@ -2092,10 +2092,12 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
Neither => {
if let Some(default) = default_map.get(ty) {
let default = default.clone();
let default_ty = self.normalize_associated_types_in(
default.origin_span, &default.ty);
match self.eq_types(false,
&self.misc(default.origin_span),
ty,
default.ty) {
default_ty) {
Ok(ok) => self.register_infer_ok_obligations(ok),
Err(_) => conflicts.push((*ty, default)),
}
@@ -4396,7 +4398,10 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
} else if !infer_types && def.has_default {
// No type parameter provided, but a default exists.
let default = self.tcx.item_type(def.def_id);
default.subst_spanned(self.tcx, substs, Some(span))
self.normalize_ty(
span,
default.subst_spanned(self.tcx, substs, Some(span))
)
} else {
// No type parameters were provided, we can infer all.
// This can also be reached in some error cases: