diff --git a/gcc/cp/constraint.cc b/gcc/cp/constraint.cc
index c9e4e7043cd..722fc334e6f 100644
--- a/gcc/cp/constraint.cc
+++ b/gcc/cp/constraint.cc
@@ -3702,18 +3702,36 @@ diagnose_trait_expr (tree expr, tree args)
     case CPTK_HAS_TRIVIAL_DESTRUCTOR:
       inform (loc, "  %qT is not trivially destructible", t1);
       break;
+    case CPTK_HAS_UNIQUE_OBJ_REPRESENTATIONS:
+      inform (loc, "  %qT does not have unique object representations", t1);
+      break;
     case CPTK_HAS_VIRTUAL_DESTRUCTOR:
       inform (loc, "  %qT does not have a virtual destructor", t1);
       break;
     case CPTK_IS_ABSTRACT:
       inform (loc, "  %qT is not an abstract class", t1);
       break;
+    case CPTK_IS_AGGREGATE:
+      inform (loc, "  %qT is not an aggregate", t1);
+      break;
+    case CPTK_IS_ASSIGNABLE:
+      inform (loc, "  %qT is not assignable from %qT", t1, t2);
+      break;
     case CPTK_IS_BASE_OF:
       inform (loc, "  %qT is not a base of %qT", t1, t2);
       break;
     case CPTK_IS_CLASS:
       inform (loc, "  %qT is not a class", t1);
       break;
+    case CPTK_IS_CONSTRUCTIBLE:
+      if (!t2)
+    inform (loc, "  %qT is not default constructible", t1);
+      else
+    inform (loc, "  %qT is not constructible from %qE", t1, t2);
+      break;
+    case CPTK_IS_CONVERTIBLE:
+      inform (loc, "  %qT is not convertible from %qE", t2, t1);
+      break;
     case CPTK_IS_EMPTY:
       inform (loc, "  %qT is not an empty class", t1);
       break;
@@ -3729,6 +3747,18 @@ diagnose_trait_expr (tree expr, tree args)
     case CPTK_IS_LITERAL_TYPE:
       inform (loc, "  %qT is not a literal type", t1);
       break;
+    case CPTK_IS_NOTHROW_ASSIGNABLE:
+      inform (loc, "  %qT is not nothrow assignable from %qT", t1, t2);
+      break;
+    case CPTK_IS_NOTHROW_CONSTRUCTIBLE:
+      if (!t2)
+	inform (loc, "  %qT is not nothrow default constructible", t1);
+      else
+	inform (loc, "  %qT is not nothrow constructible from %qE", t1, t2);
+      break;
+    case CPTK_IS_NOTHROW_CONVERTIBLE:
+	  inform (loc, "  %qT is not nothrow convertible from %qE", t2, t1);
+      break;
     case CPTK_IS_POINTER_INTERCONVERTIBLE_BASE_OF:
       inform (loc, "  %qT is not pointer-interconvertible base of %qT",
 	      t1, t2);
@@ -3748,50 +3778,20 @@ diagnose_trait_expr (tree expr, tree args)
     case CPTK_IS_TRIVIAL:
       inform (loc, "  %qT is not a trivial type", t1);
       break;
-    case CPTK_IS_UNION:
-      inform (loc, "  %qT is not a union", t1);
-      break;
-    case CPTK_IS_AGGREGATE:
-      inform (loc, "  %qT is not an aggregate", t1);
-      break;
-    case CPTK_IS_TRIVIALLY_COPYABLE:
-      inform (loc, "  %qT is not trivially copyable", t1);
-      break;
-    case CPTK_IS_ASSIGNABLE:
-      inform (loc, "  %qT is not assignable from %qT", t1, t2);
-      break;
     case CPTK_IS_TRIVIALLY_ASSIGNABLE:
       inform (loc, "  %qT is not trivially assignable from %qT", t1, t2);
       break;
-    case CPTK_IS_NOTHROW_ASSIGNABLE:
-      inform (loc, "  %qT is not nothrow assignable from %qT", t1, t2);
-      break;
-    case CPTK_IS_CONSTRUCTIBLE:
-      if (!t2)
-	inform (loc, "  %qT is not default constructible", t1);
-      else
-	inform (loc, "  %qT is not constructible from %qE", t1, t2);
-      break;
     case CPTK_IS_TRIVIALLY_CONSTRUCTIBLE:
       if (!t2)
 	inform (loc, "  %qT is not trivially default constructible", t1);
       else
 	inform (loc, "  %qT is not trivially constructible from %qE", t1, t2);
       break;
-    case CPTK_IS_NOTHROW_CONSTRUCTIBLE:
-      if (!t2)
-	inform (loc, "  %qT is not nothrow default constructible", t1);
-      else
-	inform (loc, "  %qT is not nothrow constructible from %qE", t1, t2);
-      break;
-    case CPTK_HAS_UNIQUE_OBJ_REPRESENTATIONS:
-      inform (loc, "  %qT does not have unique object representations", t1);
-      break;
-    case CPTK_IS_CONVERTIBLE:
-      inform (loc, "  %qT is not convertible from %qE", t2, t1);
+    case CPTK_IS_TRIVIALLY_COPYABLE:
+      inform (loc, "  %qT is not trivially copyable", t1);
       break;
-    case CPTK_IS_NOTHROW_CONVERTIBLE:
-	inform (loc, "  %qT is not nothrow convertible from %qE", t2, t1);
+    case CPTK_IS_UNION:
+      inform (loc, "  %qT is not a union", t1);
       break;
     case CPTK_REF_CONSTRUCTS_FROM_TEMPORARY:
       inform (loc, "  %qT is not a reference that binds to a temporary "
diff --git a/gcc/cp/cp-trait.def b/gcc/cp/cp-trait.def
index 8b7fece0cc8..0e48e64b8dd 100644
--- a/gcc/cp/cp-trait.def
+++ b/gcc/cp/cp-trait.def
@@ -84,14 +84,14 @@ DEFTRAIT_EXPR (IS_TRIVIALLY_COPYABLE, "__is_trivially_copyable", 1)
 DEFTRAIT_EXPR (IS_UNION, "__is_union", 1)
 DEFTRAIT_EXPR (REF_CONSTRUCTS_FROM_TEMPORARY, "__reference_constructs_from_temporary", 2)
 DEFTRAIT_EXPR (REF_CONVERTS_FROM_TEMPORARY, "__reference_converts_from_temporary", 2)
-/* FIXME Added space to avoid direct usage in GCC 13.  */
-DEFTRAIT_EXPR (IS_DEDUCIBLE, "__is_deducible ", 2)
-
 DEFTRAIT_TYPE (REMOVE_CV, "__remove_cv", 1)
-DEFTRAIT_TYPE (REMOVE_REFERENCE, "__remove_reference", 1)
 DEFTRAIT_TYPE (REMOVE_CVREF, "__remove_cvref", 1)
-DEFTRAIT_TYPE (UNDERLYING_TYPE,  "__underlying_type", 1)
+DEFTRAIT_TYPE (REMOVE_REFERENCE, "__remove_reference", 1)
 DEFTRAIT_TYPE (TYPE_PACK_ELEMENT, "__type_pack_element", -1)
+DEFTRAIT_TYPE (UNDERLYING_TYPE, "__underlying_type", 1)
+
+/* FIXME Added space to avoid direct usage in GCC 13.  */
+DEFTRAIT_EXPR (IS_DEDUCIBLE, "__is_deducible ", 2)
 
 /* These traits yield a type pack, not a type, and are represented by
    cp_parser_trait as a special BASES tree instead of a TRAIT_TYPE tree.  */
diff --git a/gcc/cp/semantics.cc b/gcc/cp/semantics.cc
index 80ef1364e33..782aa515da0 100644
--- a/gcc/cp/semantics.cc
+++ b/gcc/cp/semantics.cc
@@ -12090,15 +12090,6 @@ trait_expr_value (cp_trait_kind kind, tree type1, tree type2)
 		      && classtype_has_nothrow_assign_or_copy_p (type1,
 								 true))));
 
-    case CPTK_HAS_TRIVIAL_ASSIGN:
-      /* ??? The standard seems to be missing the "or array of such a class
-	 type" wording for this trait.  */
-      type1 = strip_array_types (type1);
-      return (!CP_TYPE_CONST_P (type1) && type_code1 != REFERENCE_TYPE
-	      && (trivial_type_p (type1)
-		    || (CLASS_TYPE_P (type1)
-			&& TYPE_HAS_TRIVIAL_COPY_ASSIGN (type1))));
-
     case CPTK_HAS_NOTHROW_CONSTRUCTOR:
       type1 = strip_array_types (type1);
       return (trait_expr_value (CPTK_HAS_TRIVIAL_CONSTRUCTOR, type1, type2)
@@ -12107,17 +12098,26 @@ trait_expr_value (cp_trait_kind kind, tree type1, tree type2)
 		  && maybe_instantiate_noexcept (t)
 		  && TYPE_NOTHROW_P (TREE_TYPE (t))));
 
-    case CPTK_HAS_TRIVIAL_CONSTRUCTOR:
-      type1 = strip_array_types (type1);
-      return (trivial_type_p (type1)
-	      || (CLASS_TYPE_P (type1) && TYPE_HAS_TRIVIAL_DFLT (type1)));
-
     case CPTK_HAS_NOTHROW_COPY:
       type1 = strip_array_types (type1);
       return (trait_expr_value (CPTK_HAS_TRIVIAL_COPY, type1, type2)
 	      || (CLASS_TYPE_P (type1)
 		  && classtype_has_nothrow_assign_or_copy_p (type1, false)));
 
+    case CPTK_HAS_TRIVIAL_ASSIGN:
+      /* ??? The standard seems to be missing the "or array of such a class
+	 type" wording for this trait.  */
+      type1 = strip_array_types (type1);
+      return (!CP_TYPE_CONST_P (type1) && type_code1 != REFERENCE_TYPE
+	      && (trivial_type_p (type1)
+		    || (CLASS_TYPE_P (type1)
+			&& TYPE_HAS_TRIVIAL_COPY_ASSIGN (type1))));
+
+    case CPTK_HAS_TRIVIAL_CONSTRUCTOR:
+      type1 = strip_array_types (type1);
+      return (trivial_type_p (type1)
+	      || (CLASS_TYPE_P (type1) && TYPE_HAS_TRIVIAL_DFLT (type1)));
+
     case CPTK_HAS_TRIVIAL_COPY:
       /* ??? The standard seems to be missing the "or array of such a class
 	 type" wording for this trait.  */
@@ -12131,18 +12131,21 @@ trait_expr_value (cp_trait_kind kind, tree type1, tree type2)
 	      || (CLASS_TYPE_P (type1)
 		  && TYPE_HAS_TRIVIAL_DESTRUCTOR (type1)));
 
-    case CPTK_HAS_VIRTUAL_DESTRUCTOR:
-      return type_has_virtual_destructor (type1);
-
     case CPTK_HAS_UNIQUE_OBJ_REPRESENTATIONS:
       return type_has_unique_obj_representations (type1);
 
+    case CPTK_HAS_VIRTUAL_DESTRUCTOR:
+      return type_has_virtual_destructor (type1);
+
     case CPTK_IS_ABSTRACT:
       return ABSTRACT_CLASS_TYPE_P (type1);
 
     case CPTK_IS_AGGREGATE:
       return CP_AGGREGATE_TYPE_P (type1);
 
+    case CPTK_IS_ASSIGNABLE:
+      return is_xible (MODIFY_EXPR, type1, type2);
+
     case CPTK_IS_BASE_OF:
       return (NON_UNION_CLASS_TYPE_P (type1) && NON_UNION_CLASS_TYPE_P (type2)
 	      && (same_type_ignoring_top_level_qualifiers_p (type1, type2)
@@ -12151,6 +12154,12 @@ trait_expr_value (cp_trait_kind kind, tree type1, tree type2)
     case CPTK_IS_CLASS:
       return NON_UNION_CLASS_TYPE_P (type1);
 
+    case CPTK_IS_CONSTRUCTIBLE:
+      return is_xible (INIT_EXPR, type1, type2);
+
+    case CPTK_IS_CONVERTIBLE:
+      return is_convertible (type1, type2);
+
     case CPTK_IS_EMPTY:
       return NON_UNION_CLASS_TYPE_P (type1) && CLASSTYPE_EMPTY_P (type1);
 
@@ -12166,6 +12175,15 @@ trait_expr_value (cp_trait_kind kind, tree type1, tree type2)
     case CPTK_IS_LITERAL_TYPE:
       return literal_type_p (type1);
 
+    case CPTK_IS_NOTHROW_ASSIGNABLE:
+      return is_nothrow_xible (MODIFY_EXPR, type1, type2);
+
+    case CPTK_IS_NOTHROW_CONSTRUCTIBLE:
+      return is_nothrow_xible (INIT_EXPR, type1, type2);
+
+    case CPTK_IS_NOTHROW_CONVERTIBLE:
+      return is_nothrow_convertible (type1, type2);
+
     case CPTK_IS_POINTER_INTERCONVERTIBLE_BASE_OF:
       return pointer_interconvertible_base_of_p (type1, type2);
 
@@ -12196,24 +12214,6 @@ trait_expr_value (cp_trait_kind kind, tree type1, tree type2)
     case CPTK_IS_UNION:
       return type_code1 == UNION_TYPE;
 
-    case CPTK_IS_ASSIGNABLE:
-      return is_xible (MODIFY_EXPR, type1, type2);
-
-    case CPTK_IS_CONSTRUCTIBLE:
-      return is_xible (INIT_EXPR, type1, type2);
-
-    case CPTK_IS_NOTHROW_ASSIGNABLE:
-      return is_nothrow_xible (MODIFY_EXPR, type1, type2);
-
-    case CPTK_IS_NOTHROW_CONSTRUCTIBLE:
-      return is_nothrow_xible (INIT_EXPR, type1, type2);
-
-    case CPTK_IS_CONVERTIBLE:
-      return is_convertible (type1, type2);
-
-    case CPTK_IS_NOTHROW_CONVERTIBLE:
-      return is_nothrow_convertible (type1, type2);
-
     case CPTK_REF_CONSTRUCTS_FROM_TEMPORARY:
       return ref_xes_from_temporary (type1, type2, /*direct_init=*/true);
 
@@ -12326,9 +12326,9 @@ finish_trait_expr (location_t loc, cp_trait_kind kind, tree type1, tree type2)
 	return error_mark_node;
       break;
 
+    case CPTK_IS_ABSTRACT:
     case CPTK_IS_EMPTY:
     case CPTK_IS_POLYMORPHIC:
-    case CPTK_IS_ABSTRACT:
     case CPTK_HAS_VIRTUAL_DESTRUCTOR:
       if (!check_trait_type (type1, /* kind = */ 3))
 	return error_mark_node;
@@ -12348,12 +12348,12 @@ finish_trait_expr (location_t loc, cp_trait_kind kind, tree type1, tree type2)
 	return error_mark_node;
       break;
 
-    case CPTK_IS_TRIVIALLY_ASSIGNABLE:
-    case CPTK_IS_TRIVIALLY_CONSTRUCTIBLE:
+    case CPTK_IS_CONVERTIBLE:
     case CPTK_IS_NOTHROW_ASSIGNABLE:
     case CPTK_IS_NOTHROW_CONSTRUCTIBLE:
-    case CPTK_IS_CONVERTIBLE:
     case CPTK_IS_NOTHROW_CONVERTIBLE:
+    case CPTK_IS_TRIVIALLY_ASSIGNABLE:
+    case CPTK_IS_TRIVIALLY_CONSTRUCTIBLE:
     case CPTK_REF_CONSTRUCTS_FROM_TEMPORARY:
     case CPTK_REF_CONVERTS_FROM_TEMPORARY:
       if (!check_trait_type (type1)
@@ -12372,8 +12372,8 @@ finish_trait_expr (location_t loc, cp_trait_kind kind, tree type1, tree type2)
 
     case CPTK_IS_CLASS:
     case CPTK_IS_ENUM:
-    case CPTK_IS_UNION:
     case CPTK_IS_SAME:
+    case CPTK_IS_UNION:
       break;
 
     case CPTK_IS_LAYOUT_COMPATIBLE:
@@ -12436,25 +12436,25 @@ finish_trait_type (cp_trait_kind kind, tree type1, tree type2,
 
   switch (kind)
     {
-    case CPTK_UNDERLYING_TYPE:
-      return finish_underlying_type (type1);
-
     case CPTK_REMOVE_CV:
       return cv_unqualified (type1);
 
-    case CPTK_REMOVE_REFERENCE:
+    case CPTK_REMOVE_CVREF:
       if (TYPE_REF_P (type1))
 	type1 = TREE_TYPE (type1);
-      return type1;
+      return cv_unqualified (type1);
 
-    case CPTK_REMOVE_CVREF:
+    case CPTK_REMOVE_REFERENCE:
       if (TYPE_REF_P (type1))
 	type1 = TREE_TYPE (type1);
-      return cv_unqualified (type1);
+      return type1;
 
     case CPTK_TYPE_PACK_ELEMENT:
       return finish_type_pack_element (type1, type2, complain);
 
+    case CPTK_UNDERLYING_TYPE:
+      return finish_underlying_type (type1);
+
 #define DEFTRAIT_EXPR(CODE, NAME, ARITY) \
     case CPTK_##CODE:
 #include "cp-trait.def"
diff --git a/gcc/testsuite/g++.dg/ext/has-builtin-1.C b/gcc/testsuite/g++.dg/ext/has-builtin-1.C
index f343e153e56..2223f08a628 100644
--- a/gcc/testsuite/g++.dg/ext/has-builtin-1.C
+++ b/gcc/testsuite/g++.dg/ext/has-builtin-1.C
@@ -8,9 +8,21 @@
 #if !__has_builtin (__builtin_bit_cast)
 # error "__has_builtin (__builtin_bit_cast) failed"
 #endif
+#if !__has_builtin (__builtin_is_constant_evaluated)
+# error "__has_builtin (__builtin_is_constant_evaluated) failed"
+#endif
+#if !__has_builtin (__builtin_is_corresponding_member)
+# error "__has_builtin (__builtin_is_corresponding_member) failed"
+#endif
+#if !__has_builtin (__builtin_is_pointer_interconvertible_with_class)
+# error "__has_builtin (__builtin_is_pointer_interconvertible_with_class) failed"
+#endif
 #if !__has_builtin (__builtin_launder)
 # error "__has_builtin (__builtin_launder) failed"
 #endif
+#if !__has_builtin (__builtin_source_location)
+# error "__has_builtin (__builtin_source_location) failed"
+#endif
 #if !__has_builtin (__has_nothrow_assign)
 # error "__has_builtin (__has_nothrow_assign) failed"
 #endif
@@ -44,12 +56,21 @@
 #if !__has_builtin (__is_aggregate)
 # error "__has_builtin (__is_aggregate) failed"
 #endif
+#if !__has_builtin (__is_assignable)
+# error "__has_builtin (__is_assignable) failed"
+#endif
 #if !__has_builtin (__is_base_of)
 # error "__has_builtin (__is_base_of) failed"
 #endif
 #if !__has_builtin (__is_class)
 # error "__has_builtin (__is_class) failed"
 #endif
+#if !__has_builtin (__is_constructible)
+# error "__has_builtin (__is_constructible) failed"
+#endif
+#if !__has_builtin (__is_convertible)
+# error "__has_builtin (__is_convertible) failed"
+#endif
 #if !__has_builtin (__is_empty)
 # error "__has_builtin (__is_empty) failed"
 #endif
@@ -65,6 +86,15 @@
 #if !__has_builtin (__is_literal_type)
 # error "__has_builtin (__is_literal_type) failed"
 #endif
+#if !__has_builtin (__is_nothrow_assignable)
+# error "__has_builtin (__is_nothrow_assignable) failed"
+#endif
+#if !__has_builtin (__is_nothrow_constructible)
+# error "__has_builtin (__is_nothrow_constructible) failed"
+#endif
+#if !__has_builtin (__is_nothrow_convertible)
+# error "__has_builtin (__is_nothrow_convertible) failed"
+#endif
 #if !__has_builtin (__is_pointer_interconvertible_base_of)
 # error "__has_builtin (__is_pointer_interconvertible_base_of) failed"
 #endif
@@ -98,51 +128,21 @@
 #if !__has_builtin (__is_union)
 # error "__has_builtin (__is_union) failed"
 #endif
-#if !__has_builtin (__underlying_type)
-# error "__has_builtin (__underlying_type) failed"
-#endif
-#if !__has_builtin (__is_assignable)
-# error "__has_builtin (__is_assignable) failed"
-#endif
-#if !__has_builtin (__is_constructible)
-# error "__has_builtin (__is_constructible) failed"
-#endif
-#if !__has_builtin (__is_nothrow_assignable)
-# error "__has_builtin (__is_nothrow_assignable) failed"
-#endif
-#if !__has_builtin (__is_nothrow_constructible)
-# error "__has_builtin (__is_nothrow_constructible) failed"
-#endif
 #if !__has_builtin (__reference_constructs_from_temporary)
 # error "__has_builtin (__reference_constructs_from_temporary) failed"
 #endif
 #if !__has_builtin (__reference_converts_from_temporary)
 # error "__has_builtin (__reference_converts_from_temporary) failed"
 #endif
-#if !__has_builtin (__builtin_is_constant_evaluated)
-# error "__has_builtin (__builtin_is_constant_evaluated) failed"
-#endif
-#if !__has_builtin (__builtin_source_location)
-# error "__has_builtin (__builtin_source_location) failed"
-#endif
-#if !__has_builtin (__builtin_is_corresponding_member)
-# error "__has_builtin (__builtin_is_corresponding_member) failed"
-#endif
-#if !__has_builtin (__builtin_is_pointer_interconvertible_with_class)
-# error "__has_builtin (__builtin_is_pointer_interconvertible_with_class) failed"
-#endif
-#if !__has_builtin (__is_convertible)
-# error "__has_builtin (__is_convertible) failed"
-#endif
-#if !__has_builtin (__is_nothrow_convertible)
-# error "__has_builtin (__is_nothrow_convertible) failed"
-#endif
 #if !__has_builtin (__remove_cv)
 # error "__has_builtin (__remove_cv) failed"
 #endif
+#if !__has_builtin (__remove_cvref)
+# error "__has_builtin (__remove_cvref) failed"
+#endif
 #if !__has_builtin (__remove_reference)
 # error "__has_builtin (__remove_reference) failed"
 #endif
-#if !__has_builtin (__remove_cvref)
-# error "__has_builtin (__remove_cvref) failed"
+#if !__has_builtin (__underlying_type)
+# error "__has_builtin (__underlying_type) failed"
 #endif
