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Cast intrusive_ptr's pointer to its dynamic_type before dereferencing #44

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Cast intrusive_ptr's pointer to its dynamic_type before dereferencing #44

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2 changes: 1 addition & 1 deletion boost/printers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -183,7 +183,7 @@ def to_string(self):

def children(self):
if self.value['px'] != 0:
yield 'value', self.value['px'].dereference()
yield 'value', self.value['px'].cast(self.value['px'].dynamic_type).dereference()


@add_printer
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13 changes: 11 additions & 2 deletions tests/testsuite.cpp
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Expand Up @@ -111,11 +111,20 @@ void test_intrusive_ptr()
struct S: public boost::intrusive_ref_counter<S>
{
int i;
virtual ~S() = default;
};

struct T: public S
{
int j;
};

boost::intrusive_ptr<S> intrusive_empty;
boost::intrusive_ptr<S> intrusive(new S);
intrusive->i = 42;
boost::intrusive_ptr<S> intrusive_base(new S);
boost::intrusive_ptr<S> intrusive_derived(new T);
intrusive_base->i = 42;
intrusive_derived->i = 6;
static_cast<T*>(intrusive_derived.get())->j = 9;
#endif
break_here:
dummy_function();
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12 changes: 10 additions & 2 deletions tests/testsuite.py
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Expand Up @@ -247,14 +247,22 @@ def test_intrusive_empty(self):
self.assertEqual(children, [])
self.assertIsNone(display_hint)

def test_intrusive(self):
string, children, display_hint = self.get_printer_result('intrusive')
def test_intrusive_base(self):
string, children, display_hint = self.get_printer_result('intrusive_base')
self.assertNotEqual(string, 'uninitialized')
children_as_struct = as_struct(children)
self.assertEqual(set(children_as_struct), {'value'})
self.assertEqual(children_as_struct['value']['i'], 42)
self.assertIsNone(display_hint)

def test_intrusive_derived(self):
string, children, display_hint = self.get_printer_result('intrusive_derived')
self.assertNotEqual(string, 'uninitialized')
children_as_struct = as_struct(children)
self.assertEqual(set(children_as_struct), {'value'})
self.assertEqual(children_as_struct['value']['j'], 9)
self.assertIsNone(display_hint)


class SharedPtrTest(PrettyPrinterTest):
"""Test for shared_ptr, shared_array and weak_ptr"""
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