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"""
Test the AddressSanitizer runtime support for report breakpoint and data extraction.
"""
from __future__ import print_function
import os, time
import lldb
from lldbsuite.test.lldbtest import *
import lldbsuite.test.lldbutil as lldbutil
import json
class AsanTestReportDataCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@expectedFailureLinux # non-core functionality, need to reenable and fix later (DES 2014.11.07)
@skipIfFreeBSD # llvm.org/pr21136 runtimes not yet available by default
@skipIfRemote
@skipUnlessCompilerRt
@expectedFailureDarwin
def test(self):
self.build ()
self.asan_tests ()
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
self.line_malloc = line_number('main.c', '// malloc line')
self.line_malloc2 = line_number('main.c', '// malloc2 line')
self.line_free = line_number('main.c', '// free line')
self.line_breakpoint = line_number('main.c', '// break line')
self.line_crash = line_number('main.c', '// BOOM line')
def asan_tests (self):
exe = os.path.join (os.getcwd(), "a.out")
self.expect("file " + exe, patterns = [ "Current executable set to .*a.out" ])
self.runCmd("run")
# ASan will relaunch the process to insert its library.
self.expect("thread list", "Process should be stopped due to exec.",
substrs = ['stopped', 'stop reason = '])
# no extended info when we have no ASan report
thread = self.dbg.GetSelectedTarget().process.GetSelectedThread()
s = lldb.SBStream()
self.assertFalse(thread.GetStopReasonExtendedInfoAsJSON(s))
self.runCmd("continue")
self.expect("thread list", "Process should be stopped due to ASan report",
substrs = ['stopped', 'stop reason = Use of deallocated memory detected'])
self.assertEqual(self.dbg.GetSelectedTarget().process.GetSelectedThread().GetStopReason(), lldb.eStopReasonInstrumentation)
self.expect("bt", "The backtrace should show the crashing line",
substrs = ['main.c:%d' % self.line_crash])
self.expect("thread info -s", "The extended stop info should contain the ASan provided fields",
substrs = ["access_size", "access_type", "address", "pc", "description", "heap-use-after-free"])
output_lines = self.res.GetOutput().split('\n')
json_line = output_lines[2]
data = json.loads(json_line)
self.assertEqual(data["description"], "heap-use-after-free")
self.assertEqual(data["instrumentation_class"], "AddressSanitizer")
self.assertEqual(data["stop_type"], "fatal_error")
# now let's try the SB API
process = self.dbg.GetSelectedTarget().process
thread = process.GetSelectedThread()
s = lldb.SBStream()
self.assertTrue(thread.GetStopReasonExtendedInfoAsJSON(s))
s = s.GetData()
data2 = json.loads(s)
self.assertEqual(data, data2)
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