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"""
Test lldb exception breakpoint command for CPP.
"""
import os, time
import unittest2
import lldb
import lldbutil
from lldbtest import *
class CPPBreakpointTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@skipUnlessDarwin
@dsym_test
def test_with_dsym(self):
"""Test lldb exception breakpoint command for CPP."""
self.buildDsym()
self.cpp_exceptions()
@dwarf_test
def test_with_dwarf(self):
"""Test lldb exception breakpoint command for CPP."""
self.buildDwarf()
self.cpp_exceptions()
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
self.source = 'exceptions.cpp'
self.catch_line = line_number(self.source, '// This is the line you should stop at for catch')
def cpp_exceptions (self):
"""Test lldb exception breakpoint command for CPP."""
exe = os.path.join(os.getcwd(), "a.out")
# Create a target from the debugger.
target = self.dbg.CreateTarget (exe)
self.assertTrue(target, VALID_TARGET)
exception_bkpt = target.BreakpointCreateForException (lldb.eLanguageTypeC_plus_plus, True, True)
self.assertTrue (exception_bkpt, "Made an exception breakpoint")
# Now run, and make sure we hit our breakpoint:
process = target.LaunchSimple (None, None, self.get_process_working_directory())
self.assertTrue (process, "Got a valid process")
stopped_threads = []
stopped_threads = lldbutil.get_threads_stopped_at_breakpoint (process, exception_bkpt)
self.assertTrue (len(stopped_threads) == 1, "Stopped at our exception breakpoint.")
thread = stopped_threads[0]
# Make sure our throw function is still above us on the stack:
frame_functions = lldbutil.get_function_names(thread)
self.assertTrue (frame_functions.count ("throws_exception_on_even(int)") == 1, "Our throw function is still on the stack.")
# Okay we hit our exception throw breakpoint, now make sure we get our catch breakpoint.
# One potential complication is that we might hit a couple of the exception breakpoints in getting out of the throw.
# so loop till we don't see the throws function on the stack. We should stop one more time for our exception breakpoint
# and that should be the catch...
while frame_functions.count ("throws_exception_on_even(int)") == 1:
stopped_threads = lldbutil.continue_to_breakpoint (process, exception_bkpt)
self.assertTrue (len(stopped_threads) == 1)
thread = stopped_threads[0]
frame_functions = lldbutil.get_function_names(thread)
self.assertTrue (frame_functions.count ("throws_exception_on_even(int)") == 0, "At catch our throw function is off the stack")
self.assertTrue (frame_functions.count ("intervening_function(int)") == 0, "At catch our intervening function is off the stack")
self.assertTrue (frame_functions.count ("catches_exception(int)") == 1, "At catch our catch function is on the stack")
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()
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