[PATCH] c++: use current_template_constraints more

[Patrick Palka via Gcc-patches]

gcc/cp/ChangeLog:

        * decl.cc (grokvardecl): Use current_template_constraints.
        (xref_tag): Likewise.
        * semantics.cc (finish_template_template_parm): Likewise.
---
 gcc/cp/decl.cc      | 13 +++----------
 gcc/cp/semantics.cc |  3 +--
 2 files changed, 4 insertions(+), 12 deletions(-)

diff --git a/gcc/cp/decl.cc b/gcc/cp/decl.cc
index 892e4a4b19b..26428ca7122 100644
--- a/gcc/cp/decl.cc
+++ b/gcc/cp/decl.cc
@@ -10789,9 +10789,7 @@ grokvardecl (tree type,
   else if (flag_concepts
           && current_template_depth > template_class_depth (scope))
     {
-      tree reqs = TEMPLATE_PARMS_CONSTRAINTS (current_template_parms);
-      tree ci = build_constraints (reqs, NULL_TREE);
-
+      tree ci = current_template_constraints ();
       set_constraints (decl, ci);
     }
 
@@ -15852,13 +15850,8 @@ xref_tag (enum tag_types tag_code, tree name,
         {
           /* Check that we aren't trying to overload a class with different
              constraints.  */
-          tree constr = NULL_TREE;
-          if (current_template_parms)
-            {
-              tree reqs = TEMPLATE_PARMS_CONSTRAINTS (current_template_parms);
-              constr = build_constraints (reqs, NULL_TREE);
-            }
-         if (!redeclare_class_template (t, current_template_parms, constr))
+         if (!redeclare_class_template (t, current_template_parms,
+                                        current_template_constraints ()))
            return error_mark_node;
         }
       else if (!processing_template_decl
diff --git a/gcc/cp/semantics.cc b/gcc/cp/semantics.cc
index cd7a2818feb..efdeb9318a7 100644
--- a/gcc/cp/semantics.cc
+++ b/gcc/cp/semantics.cc
@@ -3387,8 +3387,7 @@ finish_template_template_parm (tree aggr, tree identifier)
 
   /* Associate the constraints with the underlying declaration,
      not the template.  */
-  tree reqs = TEMPLATE_PARMS_CONSTRAINTS (current_template_parms);
-  tree constr = build_constraints (reqs, NULL_TREE);
+  tree constr = current_template_constraints ();
   set_constraints (decl, constr);
 
   end_template_decl ();
-- 
2.36.1.195.g8ddf593a25