Auto merge of #104573 - matthiaskrgr:rollup-k36ybtp, r=matthiaskrgr

Rollup of 8 pull requests

Successful merges:

 - #101162 (Migrate rustc_resolve to use SessionDiagnostic, part # 1)
 - #103386 (Don't allow `CoerceUnsized` into `dyn*` (except for trait upcasting))
 - #103405 (Detect incorrect chaining of if and if let conditions and recover)
 - #103594 (Fix non-associativity of `Instant` math on `aarch64-apple-darwin` targets)
 - #104006 (Add variant_name function to `LangItem`)
 - #104494 (Migrate GUI test to use functions)
 - #104516 (rustdoc: clean up sidebar width CSS)
 - #104550 (fix a typo)

Failed merges:

 - #104554 (Use `ErrorGuaranteed::unchecked_claim_error_was_emitted` less)

r? `@ghost`
`@rustbot` modify labels: rollup

1 files changed, 6 insertions, 0 deletions

diff --git a/compiler/rustc_errors/src/diagnostic_impls.rs b/compiler/rustc_errors/src/diagnostic_impls.rs
index c6035705e39..ee68344805f 100644
--- a/compiler/rustc_errors/src/diagnostic_impls.rs
+++ b/compiler/rustc_errors/src/diagnostic_impls.rs
@@ -211,6 +211,12 @@ impl IntoDiagnosticArg for DiagnosticSymbolList {
     }
 }
 
+impl<Id> IntoDiagnosticArg for hir::def::Res<Id> {
+    fn into_diagnostic_arg(self) -> DiagnosticArgValue<'static> {
+        DiagnosticArgValue::Str(Cow::Borrowed(self.descr()))
+    }
+}
+
 impl IntoDiagnostic<'_, !> for TargetDataLayoutErrors<'_> {
     fn into_diagnostic(self, handler: &Handler) -> DiagnosticBuilder<'_, !> {
         let mut diag;