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| """
Test lldb data formatter subsystem.
"""
from __future__ import print_function
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class PythonSynthDataFormatterTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@skipIfFreeBSD # llvm.org/pr20545 bogus output confuses buildbot parser
def test_with_run_command(self):
"""Test data formatter commands."""
self.build()
self.data_formatter_commands()
def test_rdar10960550_with_run_command(self):
"""Test data formatter commands."""
self.build()
self.rdar10960550_formatter_commands()
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break at.
self.line = line_number('main.cpp', '// Set break point at this line.')
self.line2 = line_number('main.cpp',
'// Set cast break point at this line.')
self.line3 = line_number(
'main.cpp', '// Set second cast break point at this line.')
def data_formatter_commands(self):
"""Test using Python synthetic children provider."""
self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
lldbutil.run_break_set_by_file_and_line(
self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True)
self.runCmd("run", RUN_SUCCEEDED)
process = self.dbg.GetSelectedTarget().GetProcess()
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs=['stopped',
'stop reason = breakpoint'])
# This is the function to remove the custom formats in order to have a
# clean slate for the next test case.
def cleanup():
self.runCmd('type format clear', check=False)
self.runCmd('type summary clear', check=False)
self.runCmd('type filter clear', check=False)
self.runCmd('type synth clear', check=False)
# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
# print the f00_1 variable without a synth
self.expect("frame variable f00_1",
substrs=['a = 1',
'b = 2',
'r = 34'])
# now set up the synth
self.runCmd("script from fooSynthProvider import *")
self.runCmd("type synth add -l fooSynthProvider foo")
self.expect("type synthetic list foo", substrs=['fooSynthProvider'])
# note that the value of fake_a depends on target byte order
if process.GetByteOrder() == lldb.eByteOrderLittle:
fake_a_val = 0x02000000
else:
fake_a_val = 0x00000100
# check that we get the two real vars and the fake_a variables
self.expect("frame variable f00_1",
substrs=['r = 34',
'fake_a = %d' % fake_a_val,
'a = 1'])
# check that we do not get the extra vars
self.expect("frame variable f00_1", matching=False,
substrs=['b = 2'])
# check access to members by name
self.expect('frame variable f00_1.fake_a',
substrs=['%d' % fake_a_val])
# check access to members by index
self.expect('frame variable f00_1[1]',
substrs=['%d' % fake_a_val])
# put synthetic children in summary in several combinations
self.runCmd(
"type summary add --summary-string \"fake_a=${svar.fake_a}\" foo")
self.expect('frame variable f00_1',
substrs=['fake_a=%d' % fake_a_val])
self.runCmd(
"type summary add --summary-string \"fake_a=${svar[1]}\" foo")
self.expect('frame variable f00_1',
substrs=['fake_a=%d' % fake_a_val])
# clear the summary
self.runCmd("type summary delete foo")
# check that the caching does not span beyond the stopoint
self.runCmd("n")
if process.GetByteOrder() == lldb.eByteOrderLittle:
fake_a_val = 0x02000000
else:
fake_a_val = 0x00000200
self.expect("frame variable f00_1",
substrs=['r = 34',
'fake_a = %d' % fake_a_val,
'a = 2'])
# check that altering the object also alters fake_a
self.runCmd("expr f00_1.a = 280")
if process.GetByteOrder() == lldb.eByteOrderLittle:
fake_a_val = 0x02000001
else:
fake_a_val = 0x00011800
self.expect("frame variable f00_1",
substrs=['r = 34',
'fake_a = %d' % fake_a_val,
'a = 280'])
# check that expanding a pointer does the right thing
if process.GetByteOrder() == lldb.eByteOrderLittle:
fake_a_val = 0x0d000000
else:
fake_a_val = 0x00000c00
self.expect("frame variable --ptr-depth 1 f00_ptr",
substrs=['r = 45',
'fake_a = %d' % fake_a_val,
'a = 12'])
# now add a filter.. it should fail
self.expect("type filter add foo --child b --child j", error=True,
substrs=['cannot add'])
# we get the synth again..
self.expect('frame variable f00_1', matching=False,
substrs=['b = 1',
'j = 17'])
self.expect("frame variable --ptr-depth 1 f00_ptr",
substrs=['r = 45',
'fake_a = %d' % fake_a_val,
'a = 12'])
# now delete the synth and add the filter
self.runCmd("type synth delete foo")
self.runCmd("type filter add foo --child b --child j")
self.expect('frame variable f00_1',
substrs=['b = 2',
'j = 18'])
self.expect("frame variable --ptr-depth 1 f00_ptr", matching=False,
substrs=['r = 45',
'fake_a = %d' % fake_a_val,
'a = 12'])
# now add the synth and it should fail
self.expect("type synth add -l fooSynthProvider foo", error=True,
substrs=['cannot add'])
# check the listing
self.expect('type synth list', matching=False,
substrs=['foo',
'Python class fooSynthProvider'])
self.expect('type filter list',
substrs=['foo',
'.b',
'.j'])
# delete the filter, add the synth
self.runCmd("type filter delete foo")
self.runCmd("type synth add -l fooSynthProvider foo")
self.expect('frame variable f00_1', matching=False,
substrs=['b = 2',
'j = 18'])
self.expect("frame variable --ptr-depth 1 f00_ptr",
substrs=['r = 45',
'fake_a = %d' % fake_a_val,
'a = 12'])
# check the listing
self.expect('type synth list',
substrs=['foo',
'Python class fooSynthProvider'])
self.expect('type filter list', matching=False,
substrs=['foo',
'.b',
'.j'])
# delete the synth and check that we get good output
self.runCmd("type synth delete foo")
self.expect("frame variable f00_1",
substrs=['a = 280',
'b = 2',
'j = 18'])
self.expect("frame variable f00_1", matching=False,
substrs=['fake_a = '])
def rdar10960550_formatter_commands(self):
"""Test that synthetic children persist stoppoints."""
self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
# The second breakpoint is on a multi-line expression, so the comment
# can't be on the right line...
lldbutil.run_break_set_by_file_and_line(
self, "main.cpp", self.line2, num_expected_locations=1, loc_exact=False)
lldbutil.run_break_set_by_file_and_line(
self, "main.cpp", self.line3, num_expected_locations=1, loc_exact=True)
self.runCmd("run", RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs=['stopped',
'stop reason = breakpoint'])
# This is the function to remove the custom formats in order to have a
# clean slate for the next test case.
def cleanup():
self.runCmd('type format clear', check=False)
self.runCmd('type summary clear', check=False)
self.runCmd('type filter clear', check=False)
self.runCmd('type synth clear', check=False)
# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
self.runCmd("command script import ./ftsp.py --allow-reload")
self.runCmd("type synth add -l ftsp.ftsp wrapint")
# we need to check that the VO is properly updated so that the same synthetic children are reused
# but their values change correctly across stop-points - in order to do this, self.runCmd("next")
# does not work because it forces a wipe of the stack frame - this is why we are using this more contrived
# mechanism to achieve our goal of preserving test_cast as a VO
test_cast = self.dbg.GetSelectedTarget().GetProcess(
).GetSelectedThread().GetSelectedFrame().FindVariable('test_cast')
str_cast = str(test_cast)
if self.TraceOn():
print(str_cast)
self.assertTrue(str_cast.find('A') != -1, 'could not find A in output')
self.assertTrue(str_cast.find('B') != -1, 'could not find B in output')
self.assertTrue(str_cast.find('C') != -1, 'could not find C in output')
self.assertTrue(str_cast.find('D') != -1, 'could not find D in output')
self.assertTrue(
str_cast.find("4 = '\\0'") != -1,
'could not find item 4 == 0')
self.dbg.GetSelectedTarget().GetProcess().GetSelectedThread().StepOver()
str_cast = str(test_cast)
if self.TraceOn():
print(str_cast)
# we detect that all the values of the child objects have changed - but the counter-generated item
# is still fixed at 0 because it is cached - this would fail if update(self): in ftsp returned False
# or if synthetic children were not being preserved
self.assertTrue(str_cast.find('Q') != -1, 'could not find Q in output')
self.assertTrue(str_cast.find('X') != -1, 'could not find X in output')
self.assertTrue(str_cast.find('T') != -1, 'could not find T in output')
self.assertTrue(str_cast.find('F') != -1, 'could not find F in output')
self.assertTrue(
str_cast.find("4 = '\\0'") != -1,
'could not find item 4 == 0')
|