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Write failing test in MSVC for deriving from empty_value

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This commit is contained in:
Braden Ganetsky 2024-06-18 21:49:48 -05:00
parent 3f36d507f2
commit c056f3dfc9
1 changed files with 31 additions and 0 deletions
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31
test/empty_value_test.cpp
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@ -63,6 +63,37 @@ void test_type()
BOOST_TEST(v2.get().value() == 6);
}
template <class T>
struct derived : boost::empty_value<T> {
typedef typename boost::empty_value<T>::type type;
derived(boost::empty_init_t e) : boost::empty_value<T>(e) {}
};
struct outer {
struct inner_empty {};
struct inner_non_empty {
inner_non_empty() : value() {}
int value;
};
};
void test_derived_compile()
{
const boost::empty_value<outer> x1(boost::empty_init);
const boost::empty_value<outer::inner_empty> x2(boost::empty_init);
const boost::empty_value<outer::inner_non_empty> x3(boost::empty_init);
const derived<outer> x4(boost::empty_init);
const derived<outer::inner_empty> x5(boost::empty_init);
const derived<outer::inner_non_empty> x6(boost::empty_init);
(void)x1;
(void)x2;
(void)x3;
(void)x4;
(void)x5;
(void)x6;
}
int main()
{
test_int();