88fbd8f9e7
The GDB replay server sanity-checks that every packet it receives matches what it expects from the serialized packet log. This mechanism tripped for TestReproducerAttach.py on Linux, because one of the packets (jModulesInfo) uses run-length encoding. The replay server was comparing the expanded incoming packet with the unexpanded packet in the log. As a result, it claimed to have received an unexpected packet, which caused the test to fail. This patch addresses that issue by expanding the run-length encoding before comparing the packets. Differential revision: https://reviews.llvm.org/D76163
74 lines
2.4 KiB
Python
74 lines
2.4 KiB
Python
"""
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Test reproducer attach.
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"""
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import lldb
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import tempfile
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from lldbsuite.test import lldbtest_config
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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 ReproducerAttachTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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NO_DEBUG_INFO_TESTCASE = True
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@skipIfFreeBSD
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@skipIfNetBSD
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@skipIfWindows
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@skipIfRemote
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@skipIfiOSSimulator
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def test_reproducer_attach(self):
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"""Test thread creation after process attach."""
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exe = '%s_%d' % (self.testMethodName, os.getpid())
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token = self.getBuildArtifact(exe + '.token')
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if os.path.exists(token):
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os.remove(token)
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reproducer = self.getBuildArtifact(exe + '.reproducer')
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if os.path.exists(reproducer):
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try:
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shutil.rmtree(reproducer)
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except OSError:
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pass
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self.build(dictionary={'EXE': exe})
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self.addTearDownHook(self.cleanupSubprocesses)
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inferior = self.spawnSubprocess(self.getBuildArtifact(exe), [token])
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pid = inferior.pid
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lldbutil.wait_for_file_on_target(self, token)
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# Use Popen because pexpect is overkill and spawnSubprocess is
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# asynchronous.
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capture = subprocess.Popen([
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lldbtest_config.lldbExec, '-b', '--capture', '--capture-path',
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reproducer, '-o', 'proc att -n {}'.format(exe), '-o',
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'reproducer generate'
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],
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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outs, _ = capture.communicate()
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outs = outs.decode('utf-8')
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self.assertIn('Process {} stopped'.format(pid), outs)
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self.assertIn('Reproducer written', outs)
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# Check that replay works.
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replay = subprocess.Popen(
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[lldbtest_config.lldbExec, '-replay', reproducer],
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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outs, _ = replay.communicate()
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outs = outs.decode('utf-8')
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self.assertIn('Process {} stopped'.format(pid), outs)
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# We can dump the reproducer in the current context.
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self.expect('reproducer dump -f {} -p process'.format(reproducer),
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substrs=['pid = {}'.format(pid), 'name = {}'.format(exe)])
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