http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38174
--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-10-13
09:38:57 UTC ---
Thanks Jason, I thought we had to purely *add* overloads. Therefore we'll have
to refactor the code a bit I guess, to always have a single call at the end of
add_builtin_candidate. For the record, yesterday was playing with things like
the below. I hope the additional code eventually will not be *much* more
complex, maybe I will be able to help...
//////////////
Index: call.c
===================================================================
--- call.c (revision 179867)
+++ call.c (working copy)
@@ -2582,6 +2582,28 @@
|| MAYBE_CLASS_TYPE_P (type1)
|| TREE_CODE (type1) == ENUMERAL_TYPE))
{
+ tree type1_type = TREE_TYPE (type1);
+ tree type2_type = TREE_TYPE (type2);
+
+ if (TYPE_PTR_P (type1) && TYPE_PTR_P (type2)
+ && same_type_p (TYPE_MAIN_VARIANT (type1_type),
+ TYPE_MAIN_VARIANT (type2_type)))
+ {
+ if ((CP_TYPE_CONST_P (type1_type)
+ && CP_TYPE_VOLATILE_P (type2_type))
+ || (CP_TYPE_VOLATILE_P (type1_type)
+ && CP_TYPE_CONST_P (type2_type)))
+ {
+ tree ctype
+ = build_pointer_type
+ (cp_build_qualified_type (TYPE_MAIN_VARIANT (type1_type),
+ (TYPE_QUAL_CONST
+ | TYPE_QUAL_VOLATILE)));
+ build_builtin_candidate
+ (candidates, fnname, ctype, ctype, args, argtypes, flags);
+ }
+ }
+
build_builtin_candidate
(candidates, fnname, type1, type1, args, argtypes, flags);
build_builtin_candidate
