[Bug c++/64603] [5 Regression] bogus error "no matching function for call to ..." with templates

[janus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64603

--- Comment #4 from janus at gcc dot gnu.org ---
(In reply to Jakub Jelinek from comment #3)
> Started with r217664.

Confirmed. Reverting that guy fixes the problem:


Index: gcc/cp/constexpr.c
===================================================================
--- gcc/cp/constexpr.c    (Revision 219840)
+++ gcc/cp/constexpr.c    (Arbeitskopie)
@@ -1049,7 +1049,7 @@ adjust_temp_type (tree type, tree temp)

 /* True if we want to use the new handling of constexpr calls based on
    DECL_SAVED_TREE.  */
-#define use_new_call true
+#define use_new_call (cxx_dialect >= cxx14)

 /* Subroutine of cxx_eval_call_expression.
    We are processing a call expression (either CALL_EXPR or