llvm-project/clang/test/SemaTemplate/temp_param.cpp

91 lines
3.3 KiB
C++

// RUN: clang-cc -fsyntax-only -verify %s
class X;
// C++ [temp.param]p4
typedef int INT;
enum E { enum1, enum2 };
template<int N> struct A1;
template<INT N, INT M> struct A2;
template<enum E x, E y> struct A3;
template<int &X> struct A4;
template<int *Ptr> struct A5;
template<int (&f)(int, int)> struct A6;
template<int (*fp)(float, double)> struct A7;
template<int X::*pm> struct A8;
template<float (X::*pmf)(float, int)> struct A9;
template<typename T, T x> struct A10;
template<float f> struct A11; // expected-error{{a non-type template parameter cannot have type 'float'}}
template<void *Ptr> struct A12; // expected-error{{a non-type template parameter cannot have type 'void *'}}
// C++ [temp.param]p8
template<int X[10]> struct A5;
template<int f(float, double)> struct A7;
// C++ [temp.param]p11:
template<typename> struct Y1; // expected-note{{too few template parameters in template template argument}}
template<typename, int> struct Y2;
template<class T1 = int, // expected-note{{previous default template argument defined here}}
class T2> // expected-error{{template parameter missing a default argument}}
class B1;
template<template<class> class = Y1, // expected-note{{previous default template argument defined here}}
template<class> class> // expected-error{{template parameter missing a default argument}}
class B1t;
template<int N = 5, // expected-note{{previous default template argument defined here}}
int M> // expected-error{{template parameter missing a default argument}}
class B1n;
// Check for bogus template parameter shadow warning.
template<template<class T> class,
template<class T> class>
class B1noshadow;
// C++ [temp.param]p10:
template<class T1, class T2 = int> class B2;
template<class T1 = int, class T2> class B2;
template<template<class, int> class, template<class> class = Y1> class B2t;
template<template<class, int> class = Y2, template<class> class> class B2t;
template<int N, int M = 5> class B2n;
template<int N = 5, int M> class B2n;
// 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;