diff options
Diffstat (limited to 'compiler/rustc_parse/src/parser')
| -rw-r--r-- | compiler/rustc_parse/src/parser/attr_wrapper.rs | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/compiler/rustc_parse/src/parser/attr_wrapper.rs b/compiler/rustc_parse/src/parser/attr_wrapper.rs index 835226a64af..44fdf146f9c 100644 --- a/compiler/rustc_parse/src/parser/attr_wrapper.rs +++ b/compiler/rustc_parse/src/parser/attr_wrapper.rs @@ -10,6 +10,7 @@ use rustc_data_structures::fx::FxHashSet; use rustc_errors::PResult; use rustc_session::parse::ParseSess; use rustc_span::{DUMMY_SP, sym}; +use thin_vec::ThinVec; use super::{Capturing, ForceCollect, Parser, Trailing}; @@ -294,10 +295,10 @@ impl<'a> Parser<'a> { // This is hot enough for `deep-vector` that checking the conditions for an empty iterator // is measurably faster than actually executing the iterator. - let node_replacements: Box<[_]> = if parser_replacements_start == parser_replacements_end + let node_replacements = if parser_replacements_start == parser_replacements_end && inner_attr_parser_replacements.is_empty() { - Box::new([]) + ThinVec::new() } else { // Grab any replace ranges that occur *inside* the current AST node. Convert them // from `ParserRange` form to `NodeRange` form. We will perform the actual |