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| author | Oli Scherer <github35764891676564198441@oli-obk.de> | 2021-08-10 11:03:10 +0000 |
|---|---|---|
| committer | Oli Scherer <github35764891676564198441@oli-obk.de> | 2021-08-10 11:03:10 +0000 |
| commit | 93c4aa80b805bd2f0685e3438cb851ff8775415c (patch) | |
| tree | e410d4b8d02d5a5715cdc37dcd61b30d29d2c3be | |
| parent | 7af445dc15924e68d9c3a0fdd506e762aaa00b79 (diff) | |
| download | rust-93c4aa80b805bd2f0685e3438cb851ff8775415c.tar.gz rust-93c4aa80b805bd2f0685e3438cb851ff8775415c.zip | |
Don't collect into a `Vec` that is immediately being iterated on again.
| -rw-r--r-- | compiler/rustc_trait_selection/src/opaque_types.rs | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/compiler/rustc_trait_selection/src/opaque_types.rs b/compiler/rustc_trait_selection/src/opaque_types.rs index f7ed5cd6bd1..1a195ce18ec 100644 --- a/compiler/rustc_trait_selection/src/opaque_types.rs +++ b/compiler/rustc_trait_selection/src/opaque_types.rs @@ -344,12 +344,11 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> { // check.) let bounds = tcx.explicit_item_bounds(def_id); debug!("{:#?}", bounds); - let bounds: Vec<_> = - bounds.iter().map(|(bound, _)| bound.subst(tcx, opaque_type_key.substs)).collect(); + let bounds = bounds.iter().map(|(bound, _)| bound.subst(tcx, opaque_type_key.substs)); debug!("{:#?}", bounds); let opaque_type = tcx.mk_opaque(def_id, opaque_type_key.substs); - let required_region_bounds = required_region_bounds(tcx, opaque_type, bounds.into_iter()); + let required_region_bounds = required_region_bounds(tcx, opaque_type, bounds); if !required_region_bounds.is_empty() { for required_region in required_region_bounds { concrete_ty.visit_with(&mut ConstrainOpaqueTypeRegionVisitor { |