On Jul 2, 2004, llewelly@xmission.com wrote:
Karol Szkudlarek <karol@mikronika.com.pl> writes:
typedef int my_int;
class ALibraryClass { public: int foo(const my_int&) { return 0; }
int foo(const bool&) { return 0; } };
class BClientClass { public: enum Items { item1=1000, item2=2000 };
void test() { ALibraryClass a; a.foo(BClientClass::item1);
This should select A::foo(const my_int&) unambigously; enum to int is
a promotion (see 4.5) while enum to bool is a conversion (4.12)
and a promotion is a better match than conversion, (13.3.3.2/4).
But there's reference binding requiring conversion, so both are
user-defined conversions [over.ics.ref]/1, and none of them is better
than the other, because the tie-breaker is only the second conversion
sequence [over.ics.rank]/3, that is an exact match in both cases.