1 files changed, 69 insertions, 0 deletions
diff --git a/test/AST/ast-dump-templates.cpp b/test/AST/ast-dump-templates.cpp
new file mode 100644
index 000000000000..89feee75268a
--- /dev/null
+++ b/test/AST/ast-dump-templates.cpp
@@ -0,0 +1,69 @@
+// RUN: %clang_cc1 -std=c++1z -ast-print %s > %t
+// RUN: FileCheck < %t %s -check-prefix=CHECK1
+// RUN: FileCheck < %t %s -check-prefix=CHECK2
+// RUN: %clang_cc1 -std=c++1z -ast-dump %s | FileCheck --check-prefix=DUMP %s
+
+template <int X, typename Y, int Z = 5>
+struct foo {
+  int constant;
+  foo() {}
+  Y getSum() { return Y(X + Z); }
+};
+
+template <int A, typename B>
+B bar() {
+  return B(A);
+}
+
+void baz() {
+  int x = bar<5, int>();
+  int y = foo<5, int>().getSum();
+  double z = foo<2, double, 3>().getSum();
+}
+
+// Template definition - foo
+// CHECK1: template <int X, typename Y, int Z = 5> struct foo {
+// CHECK2: template <int X, typename Y, int Z = 5> struct foo {
+
+// Template instantiation - foo
+// Since the order of instantiation may vary during runs, run FileCheck twice
+// to make sure each instantiation is in the correct spot.
+// CHECK1: template<> struct foo<5, int, 5> {
+// CHECK2: template<> struct foo<2, double, 3> {
+
+// Template definition - bar
+// CHECK1: template <int A, typename B> B bar()
+// CHECK2: template <int A, typename B> B bar()
+
+// Template instantiation - bar
+// CHECK1: template<> int bar<5, int>()
+// CHECK2: template<> int bar<5, int>()
+
+// CHECK1-LABEL: template <typename ...T> struct A {
+// CHECK1-NEXT:    template <T ...x[3]> struct B {
+template <typename ...T> struct A {
+  template <T ...x[3]> struct B {};
+};
+
+// CHECK1-LABEL: template <typename ...T> void f(T ...[3]) {
+// CHECK1-NEXT:    A<T [3]...> a;
+template <typename ...T> void f(T ...[3]) {
+  A<T [3]...> a;
+}
+
+namespace test2 {
+void func(int);
+void func(float);
+template<typename T>
+void tmpl() {
+  func(T());
+}
+
+// DUMP: UnresolvedLookupExpr {{.*}} <col:3> '<overloaded function type>' lvalue (ADL) = 'func'
+}
+
+namespace test3 {
+  template<typename T> struct A {};
+  template<typename T> A(T) -> A<int>;
+  // CHECK1: template <typename T> A(T) -> A<int>;
+}