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Diffstat (limited to 'packages/Python/lldbsuite/test/lang/cpp/dynamic-value/TestDynamicValue.py')
| -rw-r--r-- | packages/Python/lldbsuite/test/lang/cpp/dynamic-value/TestDynamicValue.py | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/lang/cpp/dynamic-value/TestDynamicValue.py b/packages/Python/lldbsuite/test/lang/cpp/dynamic-value/TestDynamicValue.py new file mode 100644 index 0000000..56e81c5 --- /dev/null +++ b/packages/Python/lldbsuite/test/lang/cpp/dynamic-value/TestDynamicValue.py @@ -0,0 +1,223 @@ +""" +Use lldb Python API to test dynamic values in C++ +""" + +from __future__ import print_function + + + +import os, time +import re +import lldb +import lldbsuite.test.lldbutil as lldbutil +from lldbsuite.test.lldbtest import * + +class DynamicValueTestCase(TestBase): + + mydir = TestBase.compute_mydir(__file__) + + def setUp(self): + # Call super's setUp(). + TestBase.setUp(self) + + # Find the line number to break for main.c. + + self.do_something_line = line_number('pass-to-base.cpp', '// Break here in doSomething.') + self.main_first_call_line = line_number('pass-to-base.cpp', + '// Break here and get real addresses of myB and otherB.') + self.main_second_call_line = line_number('pass-to-base.cpp', + '// Break here and get real address of reallyA.') + + @expectedFailureFreeBSD # FIXME: This needs to be root-caused. + @expectedFailureWindows("llvm.org/pr24663") + @add_test_categories(['pyapi']) + def test_get_dynamic_vals(self): + """Test fetching C++ dynamic values from pointers & references.""" + self.build(dictionary=self.getBuildFlags()) + exe = os.path.join(os.getcwd(), "a.out") + + # Create a target from the debugger. + + target = self.dbg.CreateTarget (exe) + self.assertTrue(target, VALID_TARGET) + + # Set up our breakpoints: + + do_something_bpt = target.BreakpointCreateByLocation('pass-to-base.cpp', self.do_something_line) + self.assertTrue(do_something_bpt, + VALID_BREAKPOINT) + + first_call_bpt = target.BreakpointCreateByLocation('pass-to-base.cpp', self.main_first_call_line) + self.assertTrue(first_call_bpt, + VALID_BREAKPOINT) + + second_call_bpt = target.BreakpointCreateByLocation('pass-to-base.cpp', self.main_second_call_line) + self.assertTrue(second_call_bpt, + VALID_BREAKPOINT) + + # Now launch the process, and do not stop at the entry point. + process = target.LaunchSimple (None, None, self.get_process_working_directory()) + + self.assertTrue(process.GetState() == lldb.eStateStopped, + PROCESS_STOPPED) + + threads = lldbutil.get_threads_stopped_at_breakpoint (process, first_call_bpt) + self.assertTrue (len(threads) == 1) + thread = threads[0] + + frame = thread.GetFrameAtIndex(0) + + # Now find the dynamic addresses of myB and otherB so we can compare them + # with the dynamic values we get in doSomething: + + use_dynamic = lldb.eDynamicCanRunTarget + no_dynamic = lldb.eNoDynamicValues + + myB = frame.FindVariable ('myB', no_dynamic); + self.assertTrue (myB) + myB_loc = int (myB.GetLocation(), 16) + + otherB = frame.FindVariable('otherB', no_dynamic) + self.assertTrue (otherB) + otherB_loc = int (otherB.GetLocation(), 16) + + # Okay now run to doSomething: + + threads = lldbutil.continue_to_breakpoint (process, do_something_bpt) + self.assertTrue (len(threads) == 1) + thread = threads[0] + + frame = thread.GetFrameAtIndex(0) + + # Get "this" using FindVariable: + + this_static = frame.FindVariable ('this', no_dynamic) + this_dynamic = frame.FindVariable ('this', use_dynamic) + self.examine_value_object_of_this_ptr (this_static, this_dynamic, myB_loc) + + # Now make sure that the "GetDynamicValue" works: + # This doesn't work currently because we can't get dynamic values from ConstResult objects. + fetched_dynamic_value = this_static.GetDynamicValue(use_dynamic) + self.examine_value_object_of_this_ptr (this_static, fetched_dynamic_value, myB_loc) + + # And conversely that the GetDynamicValue() interface also works: + fetched_static_value = this_dynamic.GetStaticValue() + self.examine_value_object_of_this_ptr (fetched_static_value, this_dynamic, myB_loc) + + # Get "this" using FindValue, make sure that works too: + this_static = frame.FindValue ('this', lldb.eValueTypeVariableArgument, no_dynamic) + this_dynamic = frame.FindValue ('this', lldb.eValueTypeVariableArgument, use_dynamic) + self.examine_value_object_of_this_ptr (this_static, this_dynamic, myB_loc) + + # Get "this" using the EvaluateExpression: + this_static = frame.EvaluateExpression ('this', False) + this_dynamic = frame.EvaluateExpression ('this', True) + self.examine_value_object_of_this_ptr (this_static, this_dynamic, myB_loc) + + # The "frame var" code uses another path to get into children, so let's + # make sure that works as well: + + self.expect('frame var -d run-target --ptr-depth=2 --show-types anotherA.m_client_A', 'frame var finds its way into a child member', + patterns = ['\(B \*\)']) + + # Now make sure we also get it right for a reference as well: + + anotherA_static = frame.FindVariable ('anotherA', False) + self.assertTrue (anotherA_static) + anotherA_static_addr = int (anotherA_static.GetValue(), 16) + + anotherA_dynamic = frame.FindVariable ('anotherA', True) + self.assertTrue (anotherA_dynamic) + anotherA_dynamic_addr = int (anotherA_dynamic.GetValue(), 16) + anotherA_dynamic_typename = anotherA_dynamic.GetTypeName() + self.assertTrue (anotherA_dynamic_typename.find('B') != -1) + + self.assertTrue(anotherA_dynamic_addr < anotherA_static_addr) + + anotherA_m_b_value_dynamic = anotherA_dynamic.GetChildMemberWithName('m_b_value', True) + self.assertTrue (anotherA_m_b_value_dynamic) + anotherA_m_b_val = int (anotherA_m_b_value_dynamic.GetValue(), 10) + self.assertTrue (anotherA_m_b_val == 300) + + anotherA_m_b_value_static = anotherA_static.GetChildMemberWithName('m_b_value', True) + self.assertFalse (anotherA_m_b_value_static) + + # Okay, now continue again, and when we hit the second breakpoint in main + + threads = lldbutil.continue_to_breakpoint (process, second_call_bpt) + self.assertTrue (len(threads) == 1) + thread = threads[0] + + frame = thread.GetFrameAtIndex(0) + reallyA_value = frame.FindVariable ('reallyA', False) + self.assertTrue(reallyA_value) + reallyA_loc = int (reallyA_value.GetLocation(), 16) + + # Finally continue to doSomething again, and make sure we get the right value for anotherA, + # which this time around is just an "A". + + threads = lldbutil.continue_to_breakpoint (process, do_something_bpt) + self.assertTrue(len(threads) == 1) + thread = threads[0] + + frame = thread.GetFrameAtIndex(0) + anotherA_value = frame.FindVariable ('anotherA', True) + self.assertTrue(anotherA_value) + anotherA_loc = int (anotherA_value.GetValue(), 16) + self.assertTrue (anotherA_loc == reallyA_loc) + self.assertTrue (anotherA_value.GetTypeName().find ('B') == -1) + + def examine_value_object_of_this_ptr (self, this_static, this_dynamic, dynamic_location): + # Get "this" as its static value + self.assertTrue (this_static) + this_static_loc = int (this_static.GetValue(), 16) + + # Get "this" as its dynamic value + + self.assertTrue (this_dynamic) + this_dynamic_typename = this_dynamic.GetTypeName() + self.assertTrue (this_dynamic_typename.find('B') != -1) + this_dynamic_loc = int (this_dynamic.GetValue(), 16) + + # Make sure we got the right address for "this" + + self.assertTrue (this_dynamic_loc == dynamic_location) + + # And that the static address is greater than the dynamic one + + self.assertTrue (this_static_loc > this_dynamic_loc) + + # Now read m_b_value which is only in the dynamic value: + + use_dynamic = lldb.eDynamicCanRunTarget + no_dynamic = lldb.eNoDynamicValues + + this_dynamic_m_b_value = this_dynamic.GetChildMemberWithName('m_b_value', use_dynamic) + self.assertTrue (this_dynamic_m_b_value) + + m_b_value = int (this_dynamic_m_b_value.GetValue(), 0) + self.assertTrue (m_b_value == 10) + + # Make sure it is not in the static version + + this_static_m_b_value = this_static.GetChildMemberWithName('m_b_value', no_dynamic) + self.assertFalse (this_static_m_b_value) + + # Okay, now let's make sure that we can get the dynamic type of a child element: + + contained_auto_ptr = this_dynamic.GetChildMemberWithName ('m_client_A', use_dynamic) + self.assertTrue (contained_auto_ptr) + contained_b = contained_auto_ptr.GetChildMemberWithName ('_M_ptr', use_dynamic) + if not contained_b: + contained_b = contained_auto_ptr.GetChildMemberWithName ('__ptr_', use_dynamic) + self.assertTrue (contained_b) + + contained_b_static = contained_auto_ptr.GetChildMemberWithName ('_M_ptr', no_dynamic) + if not contained_b_static: + contained_b_static = contained_auto_ptr.GetChildMemberWithName ('__ptr_', no_dynamic) + self.assertTrue (contained_b_static) + + contained_b_addr = int (contained_b.GetValue(), 16) + contained_b_static_addr = int (contained_b_static.GetValue(), 16) + + self.assertTrue (contained_b_addr < contained_b_static_addr) |
