call.c (can_convert): Allow user-defined conversions.

	* call.c (can_convert): Allow user-defined conversions.
	(can_convert_standard): New.
	* cp-tree.h: Declare it.
	* cvt.c (convert_to_reference): Use it.
	* pt.c (convert_nontype_argument): Likewise.
	* search.c (check_final_overrider): Likewise.
	Don't worry about user-defined conversions.

From-SVN: r200937

1 files changed, 14 insertions, 0 deletions

diff --git a/gcc/cp/call.c b/gcc/cp/call.c
index 78899ab..02daf82 100644
--- a/gcc/cp/call.c
+++ b/gcc/cp/call.c
@@ -8814,6 +8814,20 @@ tourney (struct z_candidate *candidates, tsubst_flags_t complain)
 bool
 can_convert (tree to, tree from, tsubst_flags_t complain)
 {
+  tree arg = NULL_TREE;
+  /* implicit_conversion only considers user-defined conversions
+     if it has an expression for the call argument list.  */
+  if (CLASS_TYPE_P (from) || CLASS_TYPE_P (to))
+    arg = build1 (CAST_EXPR, from, NULL_TREE);
+  return can_convert_arg (to, from, arg, LOOKUP_IMPLICIT, complain);
+}
+
+/* Returns nonzero if things of type FROM can be converted to TO with a
+   standard conversion.  */
+
+bool
+can_convert_standard (tree to, tree from, tsubst_flags_t complain)
+{
   return can_convert_arg (to, from, NULL_TREE, LOOKUP_IMPLICIT, complain);
 }