p5-0x.cpp revision 762bb9d0ad20320b9f97a841dce57ba5e8e48b07 
1// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
2
3// Test parsing + semantic analysis
4template<typename ...Types> struct count_types {
5  static const unsigned value = sizeof...(Types);
6};
7
8template<int ...Values> struct count_ints {
9  static const unsigned value = sizeof...(Values);
10};
11
12// Test instantiation
13int check_types[count_types<short, int, long>::value == 3? 1 : -1];
14int check_ints[count_ints<1, 2, 3, 4, 5>::value == 5? 1 : -1];
15
16// Test instantiation involving function parameter packs.
17struct any {
18  template<typename T> any(T);
19};
20
21template<typename ...Inits>
22void init_me(Inits ...inits) {
23  any array[sizeof...(inits)] = { inits... };
24}
25
26template void init_me<int, float, double*>(int, float, double*);
27
28// Test parser and semantic recovery.
29template<int Value> struct count_ints_2 {
30  static const unsigned value = sizeof...(Value); // expected-error{{'Value' does not refer to the name of a parameter pack}}
31};
32
33template<typename ...Types> // expected-note{{parameter pack 'Types' declared here}}
34struct count_types_2 {
35  static const unsigned value = sizeof... Type; // expected-error{{missing parentheses around the size of parameter pack 'Type'}} \
36  // expected-error{{Type' does not refer to the name of a parameter pack; did you mean 'Types'?}}
37};
38
39