diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/librustc_infer/infer/error_reporting/mod.rs | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/librustc_infer/infer/error_reporting/mod.rs b/src/librustc_infer/infer/error_reporting/mod.rs index c2dd3812fcc..a59a91e3005 100644 --- a/src/librustc_infer/infer/error_reporting/mod.rs +++ b/src/librustc_infer/infer/error_reporting/mod.rs @@ -1742,7 +1742,7 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> { let new_lt = generics .as_ref() .and_then(|(parent_g, g)| { - let possible = ["'a", "'b", "'c", "'d", "'e", "'f", "'g", "'h", "'i", "'j", "'k"]; + let possible: Vec<_> = (b'a'..=b'z').map(|c| format!("'{}", c as char)).collect(); let mut lts_names = g .params .iter() @@ -1758,9 +1758,9 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> { ); } let lts = lts_names.iter().map(|s| -> &str { &*s }).collect::<Vec<_>>(); - possible.iter().filter(|&candidate| !lts.contains(&*candidate)).next().map(|s| *s) + possible.into_iter().find(|candidate| !lts.contains(&candidate.as_str())) }) - .unwrap_or("'lt"); + .unwrap_or("'lt".to_string()); let add_lt_sugg = generics .as_ref() .and_then(|(_, g)| g.params.first()) |