118 lines
3.5 KiB
C++
118 lines
3.5 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
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struct A { int x; }; // expected-note 2 {{candidate constructor}}
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class Base {
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public:
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virtual void f();
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};
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class Derived : public Base { };
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struct ConvertibleToInt {
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operator int() const;
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};
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struct Constructible {
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Constructible(int, float);
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};
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// ---------------------------------------------------------------------
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// C-style casts
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// ---------------------------------------------------------------------
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template<typename T, typename U>
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struct CStyleCast0 {
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void f(T t) {
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(void)((U)t); // expected-error{{cannot convert 'A' to 'int' without a conversion operator}}
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}
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};
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template struct CStyleCast0<int, float>;
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template struct CStyleCast0<A, int>; // expected-note{{instantiation}}
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// ---------------------------------------------------------------------
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// static_cast
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// ---------------------------------------------------------------------
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template<typename T, typename U>
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struct StaticCast0 {
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void f(T t) {
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(void)static_cast<U>(t); // expected-error{{no matching conversion for static_cast from 'int' to 'A'}}
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}
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};
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template struct StaticCast0<ConvertibleToInt, bool>;
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template struct StaticCast0<int, float>;
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template struct StaticCast0<int, A>; // expected-note{{instantiation}}
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// ---------------------------------------------------------------------
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// dynamic_cast
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// ---------------------------------------------------------------------
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template<typename T, typename U>
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struct DynamicCast0 {
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void f(T t) {
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(void)dynamic_cast<U>(t); // expected-error{{not a reference or pointer}}
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}
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};
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template struct DynamicCast0<Base*, Derived*>;
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template struct DynamicCast0<Base*, A>; // expected-note{{instantiation}}
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// ---------------------------------------------------------------------
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// reinterpret_cast
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// ---------------------------------------------------------------------
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template<typename T, typename U>
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struct ReinterpretCast0 {
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void f(T t) {
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(void)reinterpret_cast<U>(t); // expected-error{{qualifiers}}
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}
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};
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template struct ReinterpretCast0<void (*)(int), void (*)(float)>;
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template struct ReinterpretCast0<int const *, float *>; // expected-note{{instantiation}}
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// ---------------------------------------------------------------------
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// const_cast
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// ---------------------------------------------------------------------
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template<typename T, typename U>
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struct ConstCast0 {
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void f(T t) {
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(void)const_cast<U>(t); // expected-error{{not allowed}}
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}
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};
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template struct ConstCast0<int const * *, int * *>;
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template struct ConstCast0<int const *, float *>; // expected-note{{instantiation}}
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// ---------------------------------------------------------------------
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// C++ functional cast
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// ---------------------------------------------------------------------
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template<typename T, typename U>
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struct FunctionalCast1 {
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void f(T t) {
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(void)U(t); // expected-error{{cannot convert 'A' to 'int' without a conversion operator}}
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}
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};
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template struct FunctionalCast1<int, float>;
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template struct FunctionalCast1<A, int>; // expected-note{{instantiation}}
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// Generates temporaries, which we cannot handle yet.
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template<int N, long M>
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struct FunctionalCast2 {
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void f() {
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(void)Constructible(N, M);
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}
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};
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template struct FunctionalCast2<1, 3>;
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// ---------------------------------------------------------------------
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// implicit casting
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// ---------------------------------------------------------------------
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template<typename T>
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struct Derived2 : public Base { };
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void test_derived_to_base(Base *&bp, Derived2<int> *dp) {
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bp = dp;
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}
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