added try_find_description to distinguish no desc from invalid code

2020-02-28 15:32:09 -07:00 · 2020-02-28 15:32:09 -07:00 · 5f3ffee6b7
commit 5f3ffee6b7
parent e9bca510fe
5 changed files with 42 additions and 17 deletions
--- a/src/librustc_errors/lib.rs
+++ b/src/librustc_errors/lib.rs
@ -786,8 +786,12 @@ impl HandlerInner {
                .emitted_diagnostic_codes
                .iter()
                .filter_map(|x| match &x {
-                    DiagnosticId::Error(s) if registry.find_description(s).is_some() => {
-                        Some(s.clone())
+                    DiagnosticId::Error(s) => {
+                        if let Ok(Some(_explanation)) = registry.try_find_description(s) {
+                            Some(s.clone())
+                        } else {
+                            None
+                        }
                    }
                    _ => None,
                })