89 lines
3.1 KiB
Python
89 lines
3.1 KiB
Python
"""
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Check for an issue where capping does not work because the Target pointer appears to be changing behind our backs
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"""
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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class SyntheticCappingTestCase(TestBase):
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Find the line number to break at.
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self.line = line_number('main.cpp', '// Set break point at this line.')
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def test_with_run_command(self):
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"""Check for an issue where capping does not work because the Target pointer appears to be changing behind our backs."""
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self.build()
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self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
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lldbutil.run_break_set_by_file_and_line(
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self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True)
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self.runCmd("run", RUN_SUCCEEDED)
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process = self.dbg.GetSelectedTarget().GetProcess()
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# The stop reason of the thread should be breakpoint.
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs=['stopped',
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'stop reason = breakpoint'])
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# This is the function to remove the custom formats in order to have a
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# clean slate for the next test case.
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def cleanup():
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self.runCmd('type format clear', check=False)
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self.runCmd('type summary clear', check=False)
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self.runCmd('type filter clear', check=False)
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self.runCmd('type synth clear', check=False)
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self.runCmd(
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"settings set target.max-children-count 256",
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check=False)
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# Execute the cleanup function during test case tear down.
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self.addTearDownHook(cleanup)
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# set up the synthetic children provider
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self.runCmd("script from fooSynthProvider import *")
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self.runCmd("type synth add -l fooSynthProvider foo")
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# note that the value of fake_a depends on target byte order
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if process.GetByteOrder() == lldb.eByteOrderLittle:
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fake_a_val = 0x02000000
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else:
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fake_a_val = 0x00000100
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# check that the synthetic children work, so we know we are doing the
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# right thing
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self.expect(
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"frame variable f00_1",
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substrs=[
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'a = 1',
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'fake_a = %d' % fake_a_val,
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'r = 34',
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])
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# check that capping works
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self.runCmd("settings set target.max-children-count 2", check=False)
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self.expect("frame variable f00_1",
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substrs=[
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'a = 1',
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'fake_a = %d' % fake_a_val,
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'...',
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])
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self.expect("frame variable f00_1", matching=False,
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substrs=['r = 34'])
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self.runCmd("settings set target.max-children-count 256", check=False)
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self.expect("frame variable f00_1", matching=True,
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substrs=['r = 34'])
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