fun-template-def.cpp
1.66 KB
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// RUN: %clang_cc1 -fsyntax-only -verify %s
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
// Tests that dependent expressions are always allowed, whereas non-dependent
// are checked as usual.
#include <stddef.h>
// Fake typeid, lacking a typeinfo header.
namespace std { class type_info {}; }
struct dummy {}; // expected-note 3 {{candidate constructor (the implicit copy constructor)}}
#if __cplusplus >= 201103L // C++11 or later
// expected-note@-2 3 {{candidate constructor (the implicit move constructor) not viable}}
#endif
template<typename T>
int f0(T x) {
return (sizeof(x) == sizeof(int))? 0 : (sizeof(x) == sizeof(double))? 1 : 2;
}
template <typename T, typename U>
T f1(T t1, U u1, int i1)
{
T t2 = i1;
t2 = i1 + u1;
++u1;
u1++;
int i2 = u1;
i1 = t1[u1];
i1 *= t1;
i1(u1, t1); // error
u1(i1, t1);
U u2 = (T)i1;
static_cast<void>(static_cast<U>(reinterpret_cast<T>(
dynamic_cast<U>(const_cast<T>(i1)))));
new U(i1, t1);
new int(t1, u1);
new (t1, u1) int;
delete t1;
dummy d1 = sizeof(t1); // expected-error {{no viable conversion}}
dummy d2 = offsetof(T, foo); // expected-error {{no viable conversion}}
dummy d3 = __alignof(u1); // expected-error {{no viable conversion}}
i1 = typeid(t1); // expected-error {{assigning to 'int' from incompatible type 'const std::type_info'}}
return u1;
}
template<typename T>
void f2(__restrict T x) {} // expected-note {{substitution failure [with T = int]: restrict requires a pointer or reference ('int' is invalid}}
void f3() {
f2<int*>(0);
f2<int>(0); // expected-error {{no matching function for call to 'f2'}}
}