[C++ Patch] PR 51424

[Jason Merrill]

On 08/29/2013 11:24 AM, Paolo Carlini wrote:
> +  if ((complain & tf_error)
> +      && (flags & LOOKUP_DELEGATING_CONS)
> +      && name == complete_ctor_identifier
> +      && TREE_CODE (ret) == CALL_EXPR
> +      && (DECL_ABSTRACT_ORIGIN (TREE_OPERAND (CALL_EXPR_FN (ret), 0))
> +	  == current_function_decl))
> +    error ("constructor delegates to itself");

How about doing this check in perform_target_ctor instead, so you don't 
need another LOOKUP flag?

Jason