macros: use typed identifiers in subdiag derive

As in the diagnostic derive, using typed identifiers in the
subdiagnostic derive improves the diagnostics of using the subdiagnostic
derive as Fluent messages will be confirmed to exist at compile-time.

Signed-off-by: David Wood <david.wood@huawei.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/compiler/rustc_macros/src/diagnostics/mod.rs b/compiler/rustc_macros/src/diagnostics/mod.rs
index 88182ed5a12..2eee4bfb5dd 100644
--- a/compiler/rustc_macros/src/diagnostics/mod.rs
+++ b/compiler/rustc_macros/src/diagnostics/mod.rs
@@ -72,12 +72,12 @@ pub fn session_diagnostic_derive(s: Structure<'_>) -> TokenStream {
 /// ```ignore (rust)
 /// #[derive(SessionSubdiagnostic)]
 /// pub enum ExpectedIdentifierLabel<'tcx> {
-///     #[label(slug = "parser-expected-identifier")]
+///     #[label(parser::expected_identifier)]
 ///     WithoutFound {
 ///         #[primary_span]
 ///         span: Span,
 ///     }
-///     #[label(slug = "parser-expected-identifier-found")]
+///     #[label(parser::expected_identifier_found)]
 ///     WithFound {
 ///         #[primary_span]
 ///         span: Span,
@@ -86,7 +86,7 @@ pub fn session_diagnostic_derive(s: Structure<'_>) -> TokenStream {
 /// }
 ///
 /// #[derive(SessionSubdiagnostic)]
-/// #[suggestion_verbose(slug = "parser-raw-identifier")]
+/// #[suggestion_verbose(parser::raw_identifier)]
 /// pub struct RawIdentifierSuggestion<'tcx> {
 ///     #[primary_span]
 ///     span: Span,