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#ifndef TEST_INTEROP_CXX_TEMPLATES_INPUTS_UNEVALUATED_CONTEXT_H
#define TEST_INTEROP_CXX_TEMPLATES_INPUTS_UNEVALUATED_CONTEXT_H
template <typename _Tp>
_Tp __declval(long);
template <typename _Tp>
struct __declval_protector {
static const bool __stop = false;
};
template <typename _Tp>
auto declval() noexcept -> decltype(__declval<_Tp>(0)) {
static_assert(__declval_protector<_Tp>::__stop,
"declval() must not be used!");
return __declval<_Tp>(0);
}
inline void stillCalled() {
static int x = 0;
}
template <class T>
class Vec {
public:
void push_back(const T &__x) {
if (!noexcept(declval<T *>()))
;
stillCalled();
}
};
inline void initVector() {
Vec<int> vv;
vv.push_back(0);
}
template <class T>
class UseDeclVal {
public:
UseDeclVal() {}
auto declTypeRet() const noexcept -> decltype(declval<T>().method()) {
return T().method();
}
inline int callMethod() const {
int x = declTypeRet();
return x;
}
};
struct StructWithMethod {
inline int method() {
return 42;
}
};
using UseDeclValStruct = UseDeclVal<StructWithMethod>;
#endif // TEST_INTEROP_CXX_TEMPLATES_INPUTS_UNEVALUATED_CONTEXT_H
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