[gcc r13-2647] c++: remove single-parameter version of mark_used

[Patrick Palka <ppalka@gcc.gnu.org>]

https://gcc.gnu.org/g:5e1031ff8ec542f14551624e8df6db450794e93e

commit r13-2647-g5e1031ff8ec542f14551624e8df6db450794e93e
Author: Patrick Palka <ppalka@redhat.com>
Date:   Tue Sep 13 10:18:58 2022 -0400

    c++: remove single-parameter version of mark_used
    
    gcc/cp/ChangeLog:
    
            * cp-tree.h (mark_used): Remove single-parameter overload.  Add
            default argument to the two-parameter overload.
            * decl2.cc (mark_used): Likewise.

Diff:
---
 gcc/cp/cp-tree.h | 4 ++--
 gcc/cp/decl2.cc  | 8 +-------
 2 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h
index 1eb176d4a50..f19ecafc266 100644
--- a/gcc/cp/cp-tree.h
+++ b/gcc/cp/cp-tree.h
@@ -6945,8 +6945,8 @@ extern bool decl_constant_var_p			(tree);
 extern bool decl_maybe_constant_var_p		(tree);
 extern void no_linkage_error			(tree);
 extern void check_default_args			(tree);
-extern bool mark_used				(tree);
-extern bool mark_used			        (tree, tsubst_flags_t);
+extern bool mark_used			        (tree,
+						 tsubst_flags_t = tf_warning_or_error);
 extern bool mark_single_function	        (tree, tsubst_flags_t);
 extern void finish_static_data_member_decl	(tree, tree, bool, tree, int);
 extern tree cp_build_parm_decl			(tree, tree, tree);
diff --git a/gcc/cp/decl2.cc b/gcc/cp/decl2.cc
index 684a2d06dde..9f18466192f 100644
--- a/gcc/cp/decl2.cc
+++ b/gcc/cp/decl2.cc
@@ -5575,7 +5575,7 @@ mark_single_function (tree expr, tsubst_flags_t complain)
    wrong, true otherwise.  */
 
 bool
-mark_used (tree decl, tsubst_flags_t complain)
+mark_used (tree decl, tsubst_flags_t complain /* = tf_warning_or_error */)
 {
   /* If we're just testing conversions or resolving overloads, we
      don't want any permanent effects like forcing functions to be
@@ -5817,12 +5817,6 @@ mark_used (tree decl, tsubst_flags_t complain)
   return true;
 }
 
-bool
-mark_used (tree decl)
-{
-  return mark_used (decl, tf_warning_or_error);
-}
-
 tree
 vtv_start_verification_constructor_init_function (void)
 {