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Added value-initialization tests for POD unions.

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[SVN r61176]
This commit is contained in:
Niels Dekker
2010-04-10 11:29:18 +00:00
parent 7318513e8e
commit 8cfb7c01d1
1 changed files with 43 additions and 3 deletions
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46
test/boost_no_com_value_init.ipp
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@ -59,6 +59,32 @@ namespace boost_no_complete_value_initialization
} }
union pod_struct_and_int_union
{
pod_struct first;
int second;
};
bool is_zero_initialized(const pod_struct_and_int_union& arg)
{
// When a union is zero-initialized, its first non-static
// named data member is zero-initialized ([dcl.init]).
return is_zero_initialized(arg.first);
}
union int_and_pod_struct_union
{
int first;
pod_struct second;
};
bool is_zero_initialized(const int_and_pod_struct_union& arg)
{
return arg.first == 0;
}
// A class that holds a "magic" enum value. // A class that holds a "magic" enum value.
// Note: This is not a POD class, because it has a user-defined // Note: This is not a POD class, because it has a user-defined
// default constructor. // default constructor.
@ -214,6 +240,10 @@ namespace boost_no_complete_value_initialization
virtual_destructor_holder m_virtual_destructor_holder_array[2]; virtual_destructor_holder m_virtual_destructor_holder_array[2];
non_pod_class m_non_pod; non_pod_class m_non_pod;
non_pod_class m_non_pod_array[2]; non_pod_class m_non_pod_array[2];
pod_struct_and_int_union m_pod_struct_and_int_union;
pod_struct_and_int_union m_pod_struct_and_int_union_array[2];
int_and_pod_struct_union m_int_and_pod_struct_union;
int_and_pod_struct_union m_int_and_pod_struct_union_array[2];
public: public:
value_initializer() value_initializer()
@ -253,7 +283,11 @@ namespace boost_no_complete_value_initialization
m_virtual_destructor_holder(), m_virtual_destructor_holder(),
m_virtual_destructor_holder_array(), m_virtual_destructor_holder_array(),
m_non_pod(), m_non_pod(),
m_non_pod_array() m_non_pod_array(),
m_pod_struct_and_int_union(),
m_pod_struct_and_int_union_array(),
m_int_and_pod_struct_union(),
m_int_and_pod_struct_union_array()
{ {
} }
@ -314,7 +348,13 @@ namespace boost_no_complete_value_initialization
(IS_TRUE( is_value_initialized(m_virtual_destructor_holder_array[1]) ) ? 0 : 1) + (IS_TRUE( is_value_initialized(m_virtual_destructor_holder_array[1]) ) ? 0 : 1) +
(IS_TRUE( m_non_pod.is_value_initialized() ) ? 0 : 1) + (IS_TRUE( m_non_pod.is_value_initialized() ) ? 0 : 1) +
(IS_TRUE( m_non_pod_array[0].is_value_initialized() ) ? 0 : 1 ) + (IS_TRUE( m_non_pod_array[0].is_value_initialized() ) ? 0 : 1 ) +
(IS_TRUE( m_non_pod_array[1].is_value_initialized() ) ? 0 : 1 ); (IS_TRUE( m_non_pod_array[1].is_value_initialized() ) ? 0 : 1 ) +
(IS_TRUE( is_zero_initialized(m_pod_struct_and_int_union) ) ? 0 : 1) +
(IS_TRUE( is_zero_initialized(m_pod_struct_and_int_union_array[0]) ) ? 0 : 1 ) +
(IS_TRUE( is_zero_initialized(m_pod_struct_and_int_union_array[1]) ) ? 0 : 1 ) +
(IS_TRUE( is_zero_initialized(m_int_and_pod_struct_union) ) ? 0 : 1) +
(IS_TRUE( is_zero_initialized(m_int_and_pod_struct_union_array[0]) ) ? 0 : 1 ) +
(IS_TRUE( is_zero_initialized(m_int_and_pod_struct_union_array[1]) ) ? 0 : 1 );
return num_failures; return num_failures;
} }
}; };
@ -331,7 +371,7 @@ namespace boost_no_complete_value_initialization
{ {
std::cout << "Number of initialization failures on the stack: " << num_failures_on_stack std::cout << "Number of initialization failures on the stack: " << num_failures_on_stack
<< "\nNumber of initialization failures on the heap: " << num_failures_on_heap << "\nNumber of initialization failures on the heap: " << num_failures_on_heap
<< "\nDetected by boost_no_complete_value_initialization::test() revision 3." << "\nDetected by boost_no_complete_value_initialization::test() revision 4."
<< std::endl; << std::endl;
} }
return static_cast<int>(num_failures_on_stack + num_failures_on_heap); return static_cast<int>(num_failures_on_stack + num_failures_on_heap);