Merged: Disallow tail calls from async functions and generators

src/parsing/parser-base.h

Index: src/parsing/parser-base.h
diff --git a/src/parsing/parser-base.h b/src/parsing/parser-base.h
index 98b85d6e4d810fc1e0fc0152b876aa4d4e616540..b8703d0691740ffd661f81044272e5c167999272 100644
--- a/src/parsing/parser-base.h
+++ b/src/parsing/parser-base.h
@@ -2605,6 +2605,12 @@ ParserBase<Impl>::ParseTailCallExpression(ExpressionClassifier* classifier,
     *ok = false;
     return Traits::EmptyExpression();
   }
+  if (is_resumable()) {
+    Scanner::Location sub_loc(sub_expression_pos, loc.end_pos);
+    ReportMessageAt(sub_loc, MessageTemplate::kUnexpectedTailCall);
+    *ok = false;
+    return Traits::EmptyExpression();
+  }
   ReturnExprContext return_expr_context =
       function_state_->return_expr_context();
   if (return_expr_context != ReturnExprContext::kInsideValidReturnStatement) {