clang/test/CXX/temp/temp.param/p12.cpp

   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}}