Add missing code="" attributes to suggestion subdiagnostics

Author: Xiretza

compiler/rustc_parse/src/parser/diagnostics.rs

@@ -289,7 +289,7 @@ pub enum BadTypePlusSub {
 #[diag(parser::maybe_recover_from_bad_qpath_stage_2)]
 struct BadQPathStage2 {
     #[primary_span]
-    #[suggestion(applicability = "maybe-incorrect")]
+    #[suggestion(code = "", applicability = "maybe-incorrect")]
     span: Span,
     ty: String,
 }
@@ -298,7 +298,7 @@ struct BadQPathStage2 {
 #[diag(parser::incorrect_semicolon)]
 struct IncorrectSemicolon<'a> {
     #[primary_span]
-    #[suggestion_short(applicability = "machine-applicable")]
+    #[suggestion_short(code = "", applicability = "machine-applicable")]
     span: Span,
     #[help]
     opt_help: Option<()>,
@@ -309,7 +309,7 @@ struct IncorrectSemicolon<'a> {
 #[diag(parser::incorrect_use_of_await)]
 struct IncorrectUseOfAwait {
     #[primary_span]
-    #[suggestion(parser::parentheses_suggestion, applicability = "machine-applicable")]
+    #[suggestion(parser::parentheses_suggestion, code = "", applicability = "machine-applicable")]
     span: Span,
 }
 
@@ -329,7 +329,7 @@ struct IncorrectAwait {
 struct InInTypo {
     #[primary_span]
     span: Span,
-    #[suggestion(applicability = "machine-applicable")]
+    #[suggestion(code = "", applicability = "machine-applicable")]
     sugg_span: Span,
 }
 

compiler/rustc_passes/src/errors.rs

@@ -462,7 +462,7 @@ pub struct LinkSection {
 pub struct NoMangleForeign {
     #[label]
     pub span: Span,
-    #[suggestion(applicability = "machine-applicable")]
+    #[suggestion(code = "", applicability = "machine-applicable")]
     pub attr_span: Span,
     pub foreign_item_kind: &'static str,
 }
@@ -596,7 +596,7 @@ pub enum UnusedNote {
 #[derive(LintDiagnostic)]
 #[diag(passes::unused)]
 pub struct Unused {
-    #[suggestion(applicability = "machine-applicable")]
+    #[suggestion(code = "", applicability = "machine-applicable")]
     pub attr_span: Span,
     #[subdiagnostic]
     pub note: UnusedNote,

src/test/ui-fulldeps/session-diagnostic/diagnostic-derive.rs

@@ -294,7 +294,7 @@ struct WrongKindOfAnnotation {
 struct OptionsInErrors {
     #[label(typeck::label)]
     label: Option<Span>,
-    #[suggestion(typeck::suggestion)]
+    #[suggestion(typeck::suggestion, code = "...")]
     opt_sugg: Option<(Span, Applicability)>,
 }