1 | // RUN: %clang_cc1 -std=c++1y -verify -fsyntax-only -fblocks %s |
2 | // RUN: %clang_cc1 -std=c++1y -verify -fsyntax-only -fblocks -fdelayed-template-parsing %s -DDELAYED_TEMPLATE_PARSING |
3 | // RUN: %clang_cc1 -std=c++1y -verify -fsyntax-only -fblocks -fms-extensions %s -DMS_EXTENSIONS |
4 | // RUN: %clang_cc1 -std=c++1y -verify -fsyntax-only -fblocks -fdelayed-template-parsing -fms-extensions %s -DMS_EXTENSIONS -DDELAYED_TEMPLATE_PARSING |
5 | |
6 | namespace explicit_argument_variadics { |
7 | |
8 | |
9 | template<class ... Ts> void print(Ts ... ) { } |
10 | |
11 | struct X { }; |
12 | struct Y { }; |
13 | struct Z { }; |
14 | |
15 | int test() { |
16 | { |
17 | auto L = [](auto ... as) { }; |
18 | L.operator()<bool>(true); |
19 | } |
20 | { |
21 | auto L = [](auto a) { }; |
22 | L.operator()<bool>(false); |
23 | } |
24 | { |
25 | auto L = [](auto a, auto b) { }; |
26 | L.operator()<bool>(false, 'a'); |
27 | } |
28 | { |
29 | auto L = [](auto a, auto b) { }; |
30 | L.operator()<bool, char>(false, 'a'); |
31 | } |
32 | { |
33 | auto L = [](auto a, auto b, auto ... cs) { }; |
34 | L.operator()<bool, char>(false, 'a'); |
35 | L.operator()<bool, char, const char*>(false, 'a', "jim"); |
36 | } |
37 | |
38 | { |
39 | auto L = [](auto ... As) { |
40 | }; |
41 | L.operator()<bool, double>(false, 3.14, "abc"); |
42 | } |
43 | { |
44 | auto L = [](auto A, auto B, auto ... As) { |
45 | }; |
46 | L.operator()<bool>(false, 3.14, "abc"); |
47 | L.operator()<bool, char>(false, 3.14, "abc"); //expected-warning{{implicit conversion}} |
48 | L.operator()<X, Y, bool, Z>(X{}, Y{}, 3.14, Z{}, X{}); //expected-warning{{implicit conversion}} |
49 | } |
50 | { |
51 | auto L = [](auto ... As) { |
52 | print("\nL::As = ", As ...); |
53 | return [](decltype(As) ... as, auto ... Bs) { |
54 | print("\nL::Inner::as = ", as ...); |
55 | print("\nL::Inner::Bs = ", Bs ...); |
56 | return 4; |
57 | }; |
58 | }; |
59 | auto M = L.operator()<bool, double>(false, 3.14, "abc"); |
60 | M(false, 6.26, "jim", true); |
61 | M.operator()<bool>(true, 6.26, "jim", false, 3.14); |
62 | } |
63 | { |
64 | auto L = [](auto A, auto ... As) { |
65 | print("\nL::As = ", As ...); |
66 | return [](decltype(As) ... as, decltype(A) a, auto ... Bs) { |
67 | print("\nL::Inner::as = ", as ...); |
68 | print("\nL::Inner::Bs = ", Bs ...); |
69 | return 4; |
70 | }; |
71 | }; |
72 | auto M = L.operator()<bool, double>(false, 3.14, "abc"); |
73 | M(6.26, "jim", true); |
74 | M.operator()<X>(6.26, "jim", false, X{}, Y{}, Z{}); |
75 | } |
76 | |
77 | return 0; |
78 | } |
79 | int run = test(); |
80 | } // end ns explicit_argument_extension |
81 | |
82 | |
83 | |
84 | #ifdef PR18499_FIXED |
85 | namespace variadic_expansion { |
86 | void f(int &, char &); |
87 | |
88 | template <typename ... T> void g(T &... t) { |
89 | f([&a(t)]()->decltype(auto) { |
90 | return a; |
91 | }() ...); |
92 | f([&a(f([&b(t)]()->decltype(auto) { return b; }()...), t)]()->decltype(auto) { |
93 | return a; |
94 | }()...); |
95 | } |
96 | |
97 | void h(int i, char c) { g(i, c); } |
98 | } |
99 | #endif |
100 | |
101 | namespace PR33082 { |
102 | template<int ...I> void a() { |
103 | int arr[] = { [](auto ...K) { (void)I; } ... }; // expected-error {{no viable conversion}} expected-note {{candidate}} |
104 | } |
105 | |
106 | template<typename ...T> struct Pack {}; |
107 | template<typename ...T, typename ...U> void b(Pack<U...>, T ...t) { |
108 | int arr[] = {[t...]() { // expected-error 2{{cannot initialize an array element of type 'int' with}} |
109 | U u; |
110 | return u; |
111 | }()...}; |
112 | } |
113 | |
114 | void c() { |
115 | int arr[] = {[](auto... v) { |
116 | v; // expected-error {{unexpanded parameter pack 'v'}} |
117 | }...}; // expected-error {{pack expansion does not contain any unexpanded parameter packs}} |
118 | } |
119 | |
120 | void run() { |
121 | a<1>(); // expected-note {{instantiation of}} |
122 | b(Pack<int*, float*>(), 1, 2, 3); // expected-note {{instantiation of}} |
123 | } |
124 | } |
125 | |