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"""
Tests that TSan correctly reports the filename and line number of a racy global C++ variable.
"""
import lldb
from lldbsuite.test.lldbtest import *
from lldbsuite.test.decorators import *
import lldbsuite.test.lldbutil as lldbutil
import json
class TsanCPPGlobalLocationTestCase(TestBase):
@expectedFailureAll(
oslist=["linux"],
bugnumber="non-core functionality, need to reenable and fix later (DES 2014.11.07)",
)
@expectedFailureNetBSD
@skipIfFreeBSD # llvm.org/pr21136 runtimes not yet available by default
@skipIfRemote
@skipUnlessThreadSanitizer
def test(self):
self.build()
self.tsan_tests()
def tsan_tests(self):
exe = self.getBuildArtifact("a.out")
self.expect("file " + exe, patterns=["Current executable set to .*a.out"])
self.runCmd("run")
stop_reason = (
self.dbg.GetSelectedTarget().process.GetSelectedThread().GetStopReason()
)
if stop_reason == lldb.eStopReasonExec:
# On OS X 10.10 and older, we need to re-exec to enable
# interceptors.
self.runCmd("continue")
# the stop reason of the thread should be breakpoint.
self.expect(
"thread list",
"A data race should be detected",
substrs=["stopped", "stop reason = Data race detected"],
)
self.expect(
"thread info -s",
"The extended stop info should contain the TSan provided fields",
substrs=["instrumentation_class", "description", "mops"],
)
output_lines = self.res.GetOutput().split("\n")
json_line = "\n".join(output_lines[2:])
data = json.loads(json_line)
self.assertEqual(data["instrumentation_class"], "ThreadSanitizer")
self.assertEqual(data["issue_type"], "data-race")
self.assertTrue(data["location_filename"].endswith("/main.cpp"))
self.assertEqual(
data["location_line"], line_number("main.cpp", "// global variable")
)
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