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| author | Arthur Woimbée <arthur.woimbee@gmail.com> | 2020-05-27 18:31:22 +0200 |
|---|---|---|
| committer | Arthur Woimbée <arthur.woimbee@gmail.com> | 2020-05-30 18:40:41 +0200 |
| commit | 5a813b6dd66d8056c62d268479c0b27dcd697554 (patch) | |
| tree | 479d5932d9dd7cd912e846e0d1f4af6359bc328b | |
| parent | 74e80468347471779be6060d8d7d6d04e98e467f (diff) | |
| download | rust-5a813b6dd66d8056c62d268479c0b27dcd697554.tar.gz rust-5a813b6dd66d8056c62d268479c0b27dcd697554.zip | |
Fix missing parentheses Fn notation error
| -rw-r--r-- | src/librustc_typeck/astconv.rs | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/librustc_typeck/astconv.rs b/src/librustc_typeck/astconv.rs index 12edfed19c0..ab9db159038 100644 --- a/src/librustc_typeck/astconv.rs +++ b/src/librustc_typeck/astconv.rs @@ -1151,9 +1151,16 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { .as_ref() .and_then(|args| args.args.get(0)) .and_then(|arg| match arg { - hir::GenericArg::Type(ty) => { - sess.source_map().span_to_snippet(ty.span).ok() + hir::GenericArg::Type(ty) => match ty.kind { + hir::TyKind::Tup(t) => t + .iter() + .map(|e| sess.source_map().span_to_snippet(e.span)) + .collect::<Result<Vec<_>, _>>() + .map(|a| a.join(", ")), + _ => sess.source_map().span_to_snippet(ty.span), } + .map(|s| format!("({})", s)) + .ok(), _ => None, }) .unwrap_or_else(|| "()".to_string()), |