p12.cpp
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// RUN: %clang_cc1 -fsyntax-only -verify %s
template<typename> struct Y1; // expected-note{{too few template parameters in template template argument}}
template<typename, int> struct Y2;
// C++ [temp.param]p12:
template<class T1,
class T2 = int> // expected-note{{previous default template argument defined here}}
class B3;
template<class T1, typename T2> class B3;
template<class T1,
typename T2 = float> // expected-error{{template parameter redefines default argument}}
class B3;
template<template<class, int> class,
template<class> class = Y1> // expected-note{{previous default template argument defined here}}
class B3t;
template<template<class, int> class, template<class> class> class B3t;
template<template<class, int> class,
template<class> class = Y1> // expected-error{{template parameter redefines default argument}}
class B3t;
template<int N,
int M = 5> // expected-note{{previous default template argument defined here}}
class B3n;
template<int N, int M> class B3n;
template<int N,
int M = 7> // expected-error{{template parameter redefines default argument}}
class B3n;
// Check validity of default arguments
template<template<class, int> class // expected-note{{previous template template parameter is here}}
= Y1> // expected-error{{template template argument has different template parameters than its corresponding template template parameter}}
class C1 {};
C1<> c1; // expected-note{{while checking a default template argument}}