[Bug c++/61080] Spurious no return statement warning with deleted operators

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61080

--- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> ---
This (rather heavy handed?) tweak also appears to work (with it these deleted
functions can keep flowing through instantiate_decl):

Index: pt.c
===================================================================
--- pt.c    (revision 210126)
+++ pt.c    (working copy)
@@ -19888,7 +19888,7 @@ instantiate_decl (tree d, int defer_ok,
       if (DECL_OMP_DECLARE_REDUCTION_P (code_pattern)
       && TREE_CODE (DECL_CONTEXT (code_pattern)) == FUNCTION_DECL)
     DECL_SAVED_TREE (d) = pop_stmt_list (block);
-      else
+      else if (!DECL_DELETED_FN (code_pattern))
     {
       d = finish_function (0);
       expand_or_defer_fn (d);