Delegation: fix ICE on recursive delegation

2024-06-10 21:21:46 +03:00
parent 06194cadcd
commit 6f78e6265a
4 changed files with 29 additions and 5 deletions
--- a/compiler/rustc_ast_lowering/src/delegation.rs
+++ b/compiler/rustc_ast_lowering/src/delegation.rs
@@ -67,7 +67,9 @@ impl<'hir> LoweringContext<'_, 'hir> {
            return false;
        };
        if let Some(local_sig_id) = sig_id.as_local() {
-            self.resolver.delegation_fn_sigs[&local_sig_id].has_self
+            // The value may be missing due to recursive delegation.
+            // Error will be emmited later during HIR ty lowering.
+            self.resolver.delegation_fn_sigs.get(&local_sig_id).map_or(false, |sig| sig.has_self)
        } else {
            match self.tcx.def_kind(sig_id) {
                DefKind::Fn => false,