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"""
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 use_lldb_suite
import os, time
import lldb
from lldbtest import *
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 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)
# 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")
# check that the synthetic children work, so we know we are doing the right thing
self.expect("frame variable f00_1",
substrs = ['r = 33',
'fake_a = 16777216',
'a = 0']);
# check that capping works
self.runCmd("settings set target.max-children-count 2", check=False)
self.expect("frame variable f00_1",
substrs = ['...',
'fake_a = 16777216',
'a = 0']);
self.expect("frame variable f00_1", matching=False,
substrs = ['r = 33']);
self.runCmd("settings set target.max-children-count 256", check=False)
self.expect("frame variable f00_1", matching=True,
substrs = ['r = 33']);
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