Re: [C++ PATCH] Fix ICE in C++14 with null RETURN_EXPR (PR c++/65202)

[Jason Merrill]

On 02/26/2015 07:22 AM, Marek Polacek wrote:
-  if (t == error_mark_node)
+  if (t == NULL_TREE || t == error_mark_node)
      {
        *non_constant_p = true;

No, we don't want an empty return to make the call non-constant, it's 
perfectly valid.  Let's handle this specifically in the RETURN_EXPR case.

Jason