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Strong guarantee on emplace

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This commit is contained in:
Peter Dimov
2019-05-12 00:38:21 +03:00
parent 5011dd8e1c
commit c3f9beaadc
2 changed files with 24 additions and 113 deletions
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52
test/variant_valueless.cpp
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@ -115,8 +115,8 @@ int main()
}
catch( std::exception const& )
{
// basic guarantee; X1 is nothrow default-constructible
BOOST_TEST_EQ( v.index(), 1 );
// strong guarantee
BOOST_TEST_EQ( v.index(), 0 );
}
}
@ -132,8 +132,8 @@ int main()
}
catch( std::exception const& )
{
// basic guarantee; X1 is nothrow default-constructible
BOOST_TEST_EQ( v.index(), 0 );
// strong guarantee
BOOST_TEST_EQ( v.index(), 1 );
}
}
@ -149,8 +149,8 @@ int main()
}
catch( std::exception const& )
{
// basic guarantee; monostate
BOOST_TEST_EQ( v.index(), 2 );
// strong guarantee
BOOST_TEST_EQ( v.index(), 0 );
}
}
@ -166,8 +166,8 @@ int main()
}
catch( std::exception const& )
{
// basic guarantee; monostate
BOOST_TEST_EQ( v.index(), 2 );
// strong guarantee
BOOST_TEST_EQ( v.index(), 1 );
}
}
@ -183,8 +183,8 @@ int main()
}
catch( std::exception const& )
{
// basic guarantee; X1 is nothrow default-constructible
BOOST_TEST_EQ( v.index(), 2 );
// strong guarantee
BOOST_TEST_EQ( v.index(), 0 );
}
}
@ -200,8 +200,8 @@ int main()
}
catch( std::exception const& )
{
// basic guarantee; monostate
BOOST_TEST_EQ( v.index(), 3 );
// strong guarantee
BOOST_TEST_EQ( v.index(), 0 );
}
}
@ -234,18 +234,8 @@ int main()
}
catch( std::exception const& )
{
// X3 is not v2d::trivially_move_assignable on libstdc++ 4.x
if( v2d::is_trivially_move_assignable<X3>::value )
{
// all trivially destructible and move-assignable, no change
BOOST_TEST_EQ( v.index(), 0 );
}
else
{
// basic guarantee; X1 is nothrow default-constructible
BOOST_TEST_EQ( v.index(), 1 );
}
// strong guarantee
BOOST_TEST_EQ( v.index(), 0 );
}
}
@ -261,18 +251,8 @@ int main()
}
catch( std::exception const& )
{
// X3 is not v2d::trivially_move_assignable on libstdc++ 4.x
if( v2d::is_trivially_move_assignable<X3>::value )
{
// all trivially destructible and move-assignable, no change
BOOST_TEST_EQ( v.index(), 0 );
}
else
{
// basic guarantee; monostate
BOOST_TEST_EQ( v.index(), 2 );
}
// strong guarantee
BOOST_TEST_EQ( v.index(), 0 );
}
}