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| author | David Wood <david@davidtw.co> | 2019-05-01 14:31:27 +0100 |
|---|---|---|
| committer | David Wood <david@davidtw.co> | 2019-05-01 15:00:43 +0100 |
| commit | f47735c3dc596c0b55c2221a18915a7b25ed1492 (patch) | |
| tree | 07ba41492e8e495ad5dc7d5681399c8b03e9161f /src/libsyntax/parse/parser.rs | |
| parent | b05d5db87bd9a3f31729a5c48dc5dd5bec6dbd2d (diff) | |
| download | rust-f47735c3dc596c0b55c2221a18915a7b25ed1492.tar.gz rust-f47735c3dc596c0b55c2221a18915a7b25ed1492.zip | |
Ensure that users cannot use generated arguments.
This commit gensyms the generated ident for replacement arguments so that users cannot refer to them. It also ensures that levenshtein distance suggestions do not suggest gensymed identifiers.
Diffstat (limited to 'src/libsyntax/parse/parser.rs')
| -rw-r--r-- | src/libsyntax/parse/parser.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs index a10ee17b7e7..8d95b390001 100644 --- a/src/libsyntax/parse/parser.rs +++ b/src/libsyntax/parse/parser.rs @@ -8878,7 +8878,7 @@ impl<'a> Parser<'a> { // Construct a name for our temporary argument. let name = format!("__arg{}", index); - let ident = Ident::from_str(&name); + let ident = Ident::from_str(&name).gensym(); // Check if this is a ident pattern, if so, we can optimize and avoid adding a // `let <pat> = __argN;` statement, instead just adding a `let <pat> = <pat>;` |