Add FIXME comment

2022-01-31 20:34:26 +01:00 · 2022-01-31 20:34:26 +01:00 · 95344c02fd
commit 95344c02fd
parent 0363f11ff0
1 changed files with 3 additions and 0 deletions
--- a/compiler/rustc_typeck/src/check/pat.rs
+++ b/compiler/rustc_typeck/src/check/pat.rs
@ -2047,6 +2047,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                            );
                            None
                        }
+                        // FIXME: instead of checking for Vec only, we could check whether the
+                        // type implements `Deref<Target=X>`; see
+                        // https://github.com/rust-lang/rust/pull/91343#discussion_r761466979
                        ty::Adt(adt_def, _)
                            if self.tcx.is_diagnostic_item(sym::Vec, adt_def.did) =>
                        {