1""" 2Tests that TSan correctly reports the filename and line number of a racy global C++ variable. 3""" 4 5import lldb 6from lldbsuite.test.lldbtest import * 7from lldbsuite.test.decorators import * 8import lldbsuite.test.lldbutil as lldbutil 9import json 10 11 12class TsanCPPGlobalLocationTestCase(TestBase): 13 @expectedFailureAll( 14 oslist=["linux"], 15 bugnumber="non-core functionality, need to reenable and fix later (DES 2014.11.07)", 16 ) 17 @expectedFailureNetBSD 18 @skipIfFreeBSD # llvm.org/pr21136 runtimes not yet available by default 19 @skipIfRemote 20 @skipUnlessThreadSanitizer 21 def test(self): 22 self.build() 23 self.tsan_tests() 24 25 def tsan_tests(self): 26 exe = self.getBuildArtifact("a.out") 27 self.expect("file " + exe, patterns=["Current executable set to .*a.out"]) 28 29 self.runCmd("run") 30 31 stop_reason = ( 32 self.dbg.GetSelectedTarget().process.GetSelectedThread().GetStopReason() 33 ) 34 if stop_reason == lldb.eStopReasonExec: 35 # On OS X 10.10 and older, we need to re-exec to enable 36 # interceptors. 37 self.runCmd("continue") 38 39 # the stop reason of the thread should be breakpoint. 40 self.expect( 41 "thread list", 42 "A data race should be detected", 43 substrs=["stopped", "stop reason = Data race detected"], 44 ) 45 46 self.expect( 47 "thread info -s", 48 "The extended stop info should contain the TSan provided fields", 49 substrs=["instrumentation_class", "description", "mops"], 50 ) 51 52 output_lines = self.res.GetOutput().split("\n") 53 json_line = "\n".join(output_lines[2:]) 54 data = json.loads(json_line) 55 self.assertEqual(data["instrumentation_class"], "ThreadSanitizer") 56 self.assertEqual(data["issue_type"], "data-race") 57 58 self.assertTrue(data["location_filename"].endswith("/main.cpp")) 59 self.assertEqual( 60 data["location_line"], line_number("main.cpp", "// global variable") 61 ) 62