91 lines
5.4 KiB
C++
91 lines
5.4 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
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namespace std {
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class type_info {};
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}
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void one() { }
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void two() { } // expected-note 4{{possible target for call}}
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void two(int) { } // expected-note 4{{possible target for call}}
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template<class T> void twoT() { } // expected-note 5{{possible target for call}}
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template<class T> void twoT(int) { } // expected-note 5{{possible target for call}}
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template<class T> void oneT() { }
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template<class T, class U> void oneT(U) { }
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/*
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The target can be
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an object or reference being initialized (8.5, 8.5.3),
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the left side of an assignment (5.17),
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a parameter of a function (5.2.2),
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a parameter of a user-defined operator (13.5),
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the return value of a function, operator function, or conversion (6.6.3),
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an explicit type conversion (5.2.3, 5.2.9, 5.4), or
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a non-type template-parameter (14.3.2)
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*/
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//#include <typeinfo>
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template<void (*p)(int)> struct test { };
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int main()
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{
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one; // expected-warning {{expression result unused}}
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two; // expected-error {{reference to overloaded function could not be resolved; did you mean to call it with no arguments?}}
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oneT<int>; // expected-warning {{expression result unused}}
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twoT<int>; // expected-error {{reference to overloaded function could not be resolved; did you mean to call it?}}
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typeid(oneT<int>); // expected-warning{{expression result unused}}
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sizeof(oneT<int>); // expected-error {{invalid application of 'sizeof' to a function type}}
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sizeof(twoT<int>); //expected-error {{reference to overloaded function could not be resolved; did you mean to call it?}}
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decltype(oneT<int>)* fun = 0;
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*one; // expected-warning {{expression result unused}}
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*oneT<int>; // expected-warning {{expression result unused}}
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*two; //expected-error {{reference to overloaded function could not be resolved; did you mean to call it with no arguments?}} expected-error {{indirection requires pointer operand}}
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*twoT<int>; //expected-error {{reference to overloaded function could not be resolved; did you mean to call it?}}
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!oneT<int>; // expected-warning {{expression result unused}} expected-warning {{address of function 'oneT<int>' will always evaluate to 'true'}} expected-note {{prefix with the address-of operator to silence this warning}}
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+oneT<int>; // expected-warning {{expression result unused}}
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-oneT<int>; //expected-error {{invalid argument type}}
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oneT<int> == 0; // expected-warning {{equality comparison result unused}} \
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// expected-note {{use '=' to turn this equality comparison into an assignment}} \
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// expected-warning {{comparison of function 'oneT<int>' equal to a null pointer is always false}} \
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// expected-note {{prefix with the address-of operator to silence this warning}}
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0 == oneT<int>; // expected-warning {{equality comparison result unused}} \
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// expected-warning {{comparison of function 'oneT<int>' equal to a null pointer is always false}} \
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// expected-note {{prefix with the address-of operator to silence this warning}}
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0 != oneT<int>; // expected-warning {{inequality comparison result unused}} \
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// expected-warning {{comparison of function 'oneT<int>' not equal to a null pointer is always true}} \
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// expected-note {{prefix with the address-of operator to silence this warning}}
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(false ? one : oneT<int>); // expected-warning {{expression result unused}}
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void (*p1)(int); p1 = oneT<int>;
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int i = (int) (false ? (void (*)(int))twoT<int> : oneT<int>); //expected-error {{incompatible operand}}
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(twoT<int>) == oneT<int>; //expected-error {{reference to overloaded function could not be resolved; did you mean to call it?}} {{cannot resolve overloaded function 'twoT' from context}}
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bool b = oneT<int>; // expected-warning {{address of function 'oneT<int>' will always evaluate to 'true'}} expected-note {{prefix with the address-of operator to silence this warning}}
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void (*p)() = oneT<int>;
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test<oneT<int> > ti;
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void (*u)(int) = oneT<int>;
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b = (void (*)()) twoT<int>;
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one < one; //expected-warning {{self-comparison always evaluates to false}} \
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//expected-warning {{relational comparison result unused}}
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oneT<int> < oneT<int>; //expected-warning {{self-comparison always evaluates to false}} \
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//expected-warning {{relational comparison result unused}}
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two < two; //expected-error 2 {{reference to overloaded function could not be resolved; did you mean to call it with no arguments?}} expected-error {{invalid operands to binary expression ('void' and 'void')}}
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twoT<int> < twoT<int>; //expected-error {{reference to overloaded function could not be resolved; did you mean to call it?}} {{cannot resolve overloaded function 'twoT' from context}}
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oneT<int> == 0; // expected-warning {{equality comparison result unused}} \
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// expected-note {{use '=' to turn this equality comparison into an assignment}} \
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// expected-warning {{comparison of function 'oneT<int>' equal to a null pointer is always false}} \
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// expected-note {{prefix with the address-of operator to silence this warning}}
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}
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struct rdar9108698 {
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template<typename> void f(); // expected-note{{possible target for call}}
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};
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void test_rdar9108698(rdar9108698 x) {
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x.f<int>; // expected-error{{reference to non-static member function must be called}}
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}
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