| """ |
| Check for an issue where capping does not work because the Target pointer appears to be changing behind our backs |
| """ |
| |
| from __future__ import print_function |
| |
| |
| import os |
| import time |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class SyntheticCappingTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| 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.') |
| |
| def test_with_run_command(self): |
| """Check for an issue where capping does not work because the Target pointer appears to be changing behind our backs.""" |
| self.build() |
| 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) |
| self.runCmd( |
| "settings set target.max-children-count 256", |
| check=False) |
| |
| # Execute the cleanup function during test case tear down. |
| self.addTearDownHook(cleanup) |
| |
| # set up the synthetic children provider |
| self.runCmd("script from fooSynthProvider import *") |
| self.runCmd("type synth add -l fooSynthProvider foo") |
| |
| # 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 the synthetic children work, so we know we are doing the |
| # right thing |
| self.expect("frame variable f00_1", |
| substrs=['r = 34', |
| 'fake_a = %d' % fake_a_val, |
| 'a = 1']) |
| |
| # check that capping works |
| self.runCmd("settings set target.max-children-count 2", check=False) |
| |
| self.expect("frame variable f00_1", |
| substrs=['...', |
| 'fake_a = %d' % fake_a_val, |
| 'a = 1']) |
| |
| self.expect("frame variable f00_1", matching=False, |
| substrs=['r = 34']) |
| |
| self.runCmd("settings set target.max-children-count 256", check=False) |
| |
| self.expect("frame variable f00_1", matching=True, |
| substrs=['r = 34']) |
