1 // PR c++/63485
2
3 template <typename C> struct A
4 {
5 typedef C type;
6 };
7 template <class> class B
8 {
9 };
10 template <class Range> void as_literal (Range &);
11 template <typename> struct C
12 {
13 typedef wchar_t char_type;
14 const char_type on_full_year_placeholder[3];
15 void
on_extended_iso_dateC16 on_extended_iso_date ()
17 {
18 B<A<wchar_t const[3]>::type> a;
19 as_literal (on_full_year_placeholder);
20 }
21 };
22 template <typename> struct date_time_format_parser_callback : C<wchar_t>
23 {
24 };
25 template <typename BaseT> struct D
26 {
27 typedef typename BaseT::char_type char_type;
28 char_type
parseD29 parse (const char_type *, const char_type *,
30 typename BaseT::callback_type p3)
31 {
32 p3.on_extended_iso_date ();
33 return char_type();
34 }
35 };
36 struct F
37 {
38 typedef date_time_format_parser_callback<wchar_t> callback_type;
39 typedef wchar_t char_type;
40 };
41 template <typename CharT, typename ParserT, typename CallbackT>
42 void
parse_format(CharT * p1,ParserT p2,CallbackT p3)43 parse_format (CharT *p1, ParserT p2, CallbackT p3)
44 {
45 CharT p = p2.parse (&p, p1, p3);
46 }
47 template <typename CharT>
48 void
parse_date_time_format(const CharT *,const CharT * p2,date_time_format_parser_callback<CharT> & p3)49 parse_date_time_format (const CharT *, const CharT *p2,
50 date_time_format_parser_callback<CharT> &p3)
51 {
52 D<F> b;
53 parse_format (p2, b, p3);
54 }
55 template void
56 parse_date_time_format (const wchar_t *, const wchar_t *,
57 date_time_format_parser_callback<wchar_t> &);
58