Rollup merge of #142606 - azhogin:azhogin/async-drop-without-sync-drop-error, r=oli-obk

AsyncDrop trait without sync Drop generates an error

When type implements `AsyncDrop` trait, it must also implement sync `Drop` trait to be used in sync context and unwinds.
This PR adds error generation in such a case.

Fixes: rust-lang/rust#140696

1 files changed, 8 insertions, 0 deletions

diff --git a/compiler/rustc_hir_analysis/src/errors.rs b/compiler/rustc_hir_analysis/src/errors.rs
index 8de2aec95a7..318aaab50f4 100644
--- a/compiler/rustc_hir_analysis/src/errors.rs
+++ b/compiler/rustc_hir_analysis/src/errors.rs
@@ -1712,3 +1712,11 @@ pub(crate) struct AbiCustomClothedFunction {
     )]
     pub naked_span: Span,
 }
+
+#[derive(Diagnostic)]
+#[diag(hir_analysis_async_drop_without_sync_drop)]
+#[help]
+pub(crate) struct AsyncDropWithoutSyncDrop {
+    #[primary_span]
+    pub span: Span,
+}