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 42db4816de3ed060e3ec4dacfe07a8053dfd6fa6..70f9d708fc4bec163ae7f248baea8a34bcd48885 100644
--- a/src/parsing/parser-base.h
+++ b/src/parsing/parser-base.h
@@ -2573,6 +2573,7 @@ ParserBase<Impl>::ParseTailCallExpression(ExpressionClassifier* classifier,
   CheckNoTailCallExpressions(classifier, CHECK_OK);
 
   Scanner::Location loc(pos, scanner()->location().end_pos);
+
   if (!expression->IsCall()) {
     Scanner::Location sub_loc(sub_expression_pos, loc.end_pos);
     impl()->ReportMessageAt(sub_loc,
@@ -2592,6 +2593,12 @@ ParserBase<Impl>::ParseTailCallExpression(ExpressionClassifier* classifier,
     *ok = false;
     return impl()->EmptyExpression();
   }
+  if (is_resumable()) {
+    Scanner::Location sub_loc(sub_expression_pos, loc.end_pos);
+    impl()->ReportMessageAt(sub_loc, MessageTemplate::kUnexpectedTailCall);
+    *ok = false;
+    return impl()->EmptyExpression();
+  }
   ReturnExprContext return_expr_context =
       function_state_->return_expr_context();
   if (return_expr_context != ReturnExprContext::kInsideValidReturnStatement) {