| // RUN: %clang_cc1 -std=c++11 -verify %s |
| |
| typedef int (*fp)(int); |
| int surrogate(int); |
| |
| struct X { |
| X() = default; // expected-note{{candidate constructor not viable: requires 0 arguments, but 1 was provided}} |
| X(const X&) = default; // expected-note{{candidate constructor not viable: no known conversion from 'bool' to 'const X' for 1st argument}} |
| X(bool b) __attribute__((enable_if(b, "chosen when 'b' is true"))); // expected-note{{candidate disabled: chosen when 'b' is true}} |
| |
| void f(int n) __attribute__((enable_if(n == 0, "chosen when 'n' is zero"))); |
| void f(int n) __attribute__((enable_if(n == 1, "chosen when 'n' is one"))); // expected-note{{member declaration nearly matches}} expected-note{{candidate disabled: chosen when 'n' is one}} |
| |
| static void s(int n) __attribute__((enable_if(n == 0, "chosen when 'n' is zero"))); // expected-note2{{candidate disabled: chosen when 'n' is zero}} |
| |
| void conflict(int n) __attribute__((enable_if(n+n == 10, "chosen when 'n' is five"))); // expected-note{{candidate function}} |
| void conflict(int n) __attribute__((enable_if(n*2 == 10, "chosen when 'n' is five"))); // expected-note{{candidate function}} |
| |
| operator long() __attribute__((enable_if(true, "chosen on your platform"))); |
| operator int() __attribute__((enable_if(false, "chosen on other platform"))); |
| |
| operator fp() __attribute__((enable_if(false, "never enabled"))) { return surrogate; } // expected-note{{conversion candidate of type 'int (*)(int)'}} // FIXME: the message is not displayed |
| }; |
| |
| void X::f(int n) __attribute__((enable_if(n == 0, "chosen when 'n' is zero"))) // expected-note{{member declaration nearly matches}} expected-note{{candidate disabled: chosen when 'n' is zero}} |
| { |
| } |
| |
| void X::f(int n) __attribute__((enable_if(n == 2, "chosen when 'n' is two"))) // expected-error{{out-of-line definition of 'f' does not match any declaration in 'X'}} expected-note{{candidate disabled: chosen when 'n' is two}} |
| { |
| } |
| |
| X x1(true); |
| X x2(false); // expected-error{{no matching constructor for initialization of 'X'}} |
| |
| __attribute__((deprecated)) constexpr int old() { return 0; } // expected-note2{{'old' has been explicitly marked deprecated here}} |
| void deprec1(int i) __attribute__((enable_if(old() == 0, "chosen when old() is zero"))); // expected-warning{{'old' is deprecated}} |
| void deprec2(int i) __attribute__((enable_if(old() == 0, "chosen when old() is zero"))); // expected-warning{{'old' is deprecated}} |
| |
| void overloaded(int); |
| void overloaded(long); |
| |
| struct Nothing { }; |
| template<typename T> void typedep(T t) __attribute__((enable_if(t, ""))); // expected-note{{candidate disabled:}} expected-error{{value of type 'Nothing' is not contextually convertible to 'bool'}} |
| template<int N> void valuedep() __attribute__((enable_if(N == 1, ""))); |
| |
| // FIXME: we skip potential constant expression evaluation on value dependent |
| // enable-if expressions |
| int not_constexpr(); |
| template<int N> void valuedep() __attribute__((enable_if(N == not_constexpr(), ""))); |
| |
| template <typename T> void instantiationdep() __attribute__((enable_if(sizeof(sizeof(T)) != 0, ""))); |
| |
| void test() { |
| X x; |
| x.f(0); |
| x.f(1); |
| x.f(2); // no error, suppressed by erroneous out-of-line definition |
| x.f(3); // expected-error{{no matching member function for call to 'f'}} |
| |
| x.s(0); |
| x.s(1); // expected-error{{no matching member function for call to 's'}} |
| |
| X::s(0); |
| X::s(1); // expected-error{{no matching member function for call to 's'}} |
| |
| x.conflict(5); // expected-error{{call to member function 'conflict' is ambiguous}} |
| |
| deprec2(0); |
| |
| overloaded(x); |
| |
| int i = x(1); // expected-error{{no matching function for call to object of type 'X'}} |
| |
| Nothing n; |
| typedep(0); // expected-error{{no matching function for call to 'typedep'}} |
| typedep(1); |
| typedep(n); // expected-note{{in instantiation of function template specialization 'typedep<Nothing>' requested here}} |
| } |