1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2 template<typename> struct Y1; // expected-note{{too few template parameters in template template argument}}
3 template<typename, int> struct Y2;
4 
5 // C++ [temp.param]p12:
6 template<class T1,
7          class T2 = int> // expected-note{{previous default template argument defined here}}
8   class B3;
9 template<class T1, typename T2> class B3;
10 template<class T1,
11          typename T2 = float> // expected-error{{template parameter redefines default argument}}
12   class B3;
13 
14 template<template<class, int> class,
15          template<class> class = Y1> // expected-note{{previous default template argument defined here}}
16   class B3t;
17 
18 template<template<class, int> class, template<class> class> class B3t;
19 
20 template<template<class, int> class,
21          template<class> class = Y1> // expected-error{{template parameter redefines default argument}}
22   class B3t;
23 
24 template<int N,
25          int M = 5> // expected-note{{previous default template argument defined here}}
26   class B3n;
27 
28 template<int N, int M> class B3n;
29 
30 template<int N,
31          int M = 7>  // expected-error{{template parameter redefines default argument}}
32   class B3n;
33 
34 // Check validity of default arguments
35 template<template<class, int> class // expected-note{{previous template template parameter is here}}
36            = Y1> // expected-error{{template template argument has different template parameters than its corresponding template template parameter}}
37   class C1 {};
38 
39 C1<> c1; // expected-note{{while checking a default template argument}}
40