On 6/7/22 10:16, Patrick Palka wrote:
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.

OK.

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

diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h
index cc13809f38a..ac5b3eef118 100644
--- a/gcc/cp/cp-tree.h
+++ b/gcc/cp/cp-tree.h
@@ -6932,8 +6932,7 @@ 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 974afe798b6..f15381be5f1 100644
--- a/gcc/cp/decl2.cc
+++ b/gcc/cp/decl2.cc
@@ -5730,7 +5730,7 @@ 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
@@ -5974,12 +5974,6 @@ 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)
  {

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