1 // RUN: %clang_cc1 -std=c++1z -ast-print %s > %t
2 // RUN: FileCheck < %t %s -check-prefix=CHECK1
3 // RUN: FileCheck < %t %s -check-prefix=CHECK2
4 // RUN: %clang_cc1 -std=c++1z -ast-dump %s | FileCheck --check-prefix=DUMP %s
5
6 template <int X, typename Y, int Z = 5>
7 struct foo {
8 int constant;
foofoo9 foo() {}
getSumfoo10 Y getSum() { return Y(X + Z); }
11 };
12
13 template <int A, typename B>
bar()14 B bar() {
15 return B(A);
16 }
17
baz()18 void baz() {
19 int x = bar<5, int>();
20 int y = foo<5, int>().getSum();
21 double z = foo<2, double, 3>().getSum();
22 }
23
24 // Template definition - foo
25 // CHECK1: template <int X, typename Y, int Z = 5> struct foo {
26 // CHECK2: template <int X, typename Y, int Z = 5> struct foo {
27
28 // Template instantiation - foo
29 // Since the order of instantiation may vary during runs, run FileCheck twice
30 // to make sure each instantiation is in the correct spot.
31 // CHECK1: template<> struct foo<5, int, 5> {
32 // CHECK2: template<> struct foo<2, double, 3> {
33
34 // Template definition - bar
35 // CHECK1: template <int A, typename B> B bar()
36 // CHECK2: template <int A, typename B> B bar()
37
38 // Template instantiation - bar
39 // CHECK1: template<> int bar<5, int>()
40 // CHECK2: template<> int bar<5, int>()
41
42 // CHECK1-LABEL: template <typename ...T> struct A {
43 // CHECK1-NEXT: template <T ...x[3]> struct B {
44 template <typename ...T> struct A {
45 template <T ...x[3]> struct B {};
46 };
47
48 // CHECK1-LABEL: template <typename ...T> void f(T ...[3]) {
49 // CHECK1-NEXT: A<T [3]...> a;
f(T...[3])50 template <typename ...T> void f(T ...[3]) {
51 A<T [3]...> a;
52 }
53
54 namespace test2 {
55 void func(int);
56 void func(float);
57 template<typename T>
tmpl()58 void tmpl() {
59 func(T());
60 }
61
62 // DUMP: UnresolvedLookupExpr {{.*}} <col:3> '<overloaded function type>' lvalue (ADL) = 'func'
63 }
64
65 namespace test3 {
66 template<typename T> struct A {};
67 template<typename T> A(T) -> A<int>;
68 // CHECK1: template <typename T> A(T) -> A<int>;
69 }
70