artulab.com Git - openbsd/blob

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