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from __future__ import print_function
import os
import time
import re
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class ValueAPIEmptyClassTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@add_test_categories(['pyapi'])
def test(self):
self.build()
exe = os.path.join(os.getcwd(), 'a.out')
line = line_number('main.cpp', '// Break at this line')
# Create a target by the debugger.
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
# Create the breakpoint inside function 'main'.
breakpoint = target.BreakpointCreateByLocation('main.cpp', line)
self.assertTrue(breakpoint, VALID_BREAKPOINT)
# Now launch the process, and do not stop at entry point.
process = target.LaunchSimple(
None, None, self.get_process_working_directory())
self.assertTrue(process, PROCESS_IS_VALID)
# Get Frame #0.
self.assertTrue(process.GetState() == lldb.eStateStopped)
thread = lldbutil.get_stopped_thread(
process, lldb.eStopReasonBreakpoint)
self.assertTrue(
thread.IsValid(),
"There should be a thread stopped due to breakpoint condition")
frame0 = thread.GetFrameAtIndex(0)
# Verify that we can access to a frame variable with an empty class type
e = frame0.FindVariable('e')
self.assertTrue(e.IsValid(), VALID_VARIABLE)
self.DebugSBValue(e)
self.assertEqual(e.GetNumChildren(), 0)
# Verify that we can acces to a frame variable what is a pointer to an
# empty class
ep = frame0.FindVariable('ep')
self.assertTrue(ep.IsValid(), VALID_VARIABLE)
self.DebugSBValue(ep)
# Verify that we can dereference a pointer to an empty class
epd = ep.Dereference()
self.assertTrue(epd.IsValid(), VALID_VARIABLE)
self.DebugSBValue(epd)
self.assertEqual(epd.GetNumChildren(), 0)
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