Add a future compatibility note

rust-lang · Nov 19, 2015 · af96402 · af96402
1 parent 4573bb8
commit af96402
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/librustc_typeck/check/_match.rs b/src/librustc_typeck/check/_match.rs
@@ -674,6 +674,10 @@ pub fn check_pat_enum<'a, 'tcx>(pcx: &pat_ctxt<'a, 'tcx>,
                 report_bad_struct_kind(is_special_case);
                 if !is_special_case {
                     return
+                } else {
+                    span_note!(tcx.sess, pat.span,
+                        "this warning will become a HARD ERROR in a future release. \
+                        See RFC 218 for details.");
                 }
             }
             (variant.fields