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Add variant<monostate, T>::emplace tests to fish out -Wmaybe-uninitialized warnings

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This commit is contained in:
Peter Dimov
2022-10-18 02:33:29 +03:00
parent 6fe1c69bc8
commit 4a5f3dc498
1 changed files with 34 additions and 0 deletions
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34
test/variant_emplace_index.cpp
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@@ -288,5 +288,39 @@ int main()
BOOST_TEST_EQ( Z1::instances, 0 ); BOOST_TEST_EQ( Z1::instances, 0 );
BOOST_TEST_EQ( Z2::instances, 0 ); BOOST_TEST_EQ( Z2::instances, 0 );
{
variant<monostate, monostate> v;
BOOST_TEST_EQ( v.index(), 0 );
v.emplace<0>();
BOOST_TEST_EQ( v.index(), 0 );
v.emplace<1>();
BOOST_TEST_EQ( v.index(), 1 );
v.emplace<1>();
BOOST_TEST_EQ( v.index(), 1 );
v.emplace<0>();
BOOST_TEST_EQ( v.index(), 0 );
}
{
variant<monostate, int> v;
BOOST_TEST_EQ( v.index(), 0 );
v.emplace<0>();
BOOST_TEST_EQ( v.index(), 0 );
v.emplace<1>();
BOOST_TEST_EQ( v.index(), 1 );
v.emplace<1>();
BOOST_TEST_EQ( v.index(), 1 );
v.emplace<0>();
BOOST_TEST_EQ( v.index(), 0 );
}
return boost::report_errors(); return boost::report_errors();
} }