diff options
| -rw-r--r-- | compiler/rustc_resolve/src/late.rs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/rustc_resolve/src/late.rs b/compiler/rustc_resolve/src/late.rs index 02a7bc0b622..4beaf6bfa80 100644 --- a/compiler/rustc_resolve/src/late.rs +++ b/compiler/rustc_resolve/src/late.rs @@ -1891,8 +1891,9 @@ impl<'a: 'ast, 'b, 'ast> LateResolutionVisitor<'a, 'b, 'ast> { self.r.trait_map.insert(id, traits); } - let mut std_path = vec![Segment::from_ident(Ident::with_dummy_span(sym::std))]; + let mut std_path = Vec::with_capacity(1 + path.len()); + std_path.push(Segment::from_ident(Ident::with_dummy_span(sym::std))); std_path.extend(path); if self.r.primitive_type_table.primitive_types.contains_key(&path[0].ident.name) { |