| """ |
| Test that ASan memory history provider returns correct stack traces |
| """ |
| |
| from __future__ import print_function |
| |
| |
| import os |
| import time |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbplatform |
| from lldbsuite.test import lldbutil |
| |
| |
| class AsanTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| @expectedFailureAll( |
| oslist=["linux"], |
| bugnumber="non-core functionality, need to reenable and fix later (DES 2014.11.07)") |
| @skipIfFreeBSD # llvm.org/pr21136 runtimes not yet available by default |
| @skipIfRemote |
| @skipUnlessAddressSanitizer |
| 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') |
| |
| def asan_tests(self): |
| exe = self.getBuildArtifact("a.out") |
| self.expect( |
| "file " + exe, |
| patterns=["Current executable set to .*a.out"]) |
| |
| self.runCmd("breakpoint set -f main.c -l %d" % self.line_breakpoint) |
| |
| # "memory history" command should not work without a process |
| self.expect("memory history 0", |
| error=True, |
| substrs=["invalid process"]) |
| |
| 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", STOPPED_DUE_TO_BREAKPOINT, |
| substrs=['stopped', 'stop reason = breakpoint']) |
| |
| # test that the ASan dylib is present |
| self.expect( |
| "image lookup -n __asan_describe_address", |
| "__asan_describe_address should be present", |
| substrs=['1 match found']) |
| |
| # test the 'memory history' command |
| self.expect( |
| "memory history 'pointer'", |
| substrs=[ |
| 'Memory allocated by Thread', |
| 'a.out`f1', |
| 'main.c:%d' % |
| self.line_malloc, |
| 'Memory deallocated by Thread', |
| 'a.out`f2', |
| 'main.c:%d' % |
| self.line_free]) |
| |
| # do the same using SB API |
| process = self.dbg.GetSelectedTarget().process |
| val = process.GetSelectedThread().GetSelectedFrame().EvaluateExpression("pointer") |
| addr = val.GetValueAsUnsigned() |
| threads = process.GetHistoryThreads(addr) |
| self.assertEqual(threads.GetSize(), 2) |
| |
| history_thread = threads.GetThreadAtIndex(0) |
| self.assertTrue(history_thread.num_frames >= 2) |
| self.assertEqual(history_thread.frames[1].GetLineEntry( |
| ).GetFileSpec().GetFilename(), "main.c") |
| self.assertEqual( |
| history_thread.frames[1].GetLineEntry().GetLine(), |
| self.line_free) |
| |
| history_thread = threads.GetThreadAtIndex(1) |
| self.assertTrue(history_thread.num_frames >= 2) |
| self.assertEqual(history_thread.frames[1].GetLineEntry( |
| ).GetFileSpec().GetFilename(), "main.c") |
| self.assertEqual( |
| history_thread.frames[1].GetLineEntry().GetLine(), |
| self.line_malloc) |
| |
| # let's free the container (SBThreadCollection) and see if the |
| # SBThreads still live |
| threads = None |
| self.assertTrue(history_thread.num_frames >= 2) |
| self.assertEqual(history_thread.frames[1].GetLineEntry( |
| ).GetFileSpec().GetFilename(), "main.c") |
| self.assertEqual( |
| history_thread.frames[1].GetLineEntry().GetLine(), |
| self.line_malloc) |
| |
| # ASan will break when a report occurs and we'll try the API then |
| self.runCmd("continue") |
| |
| self.expect( |
| "thread list", |
| "Process should be stopped due to ASan report", |
| substrs=[ |
| 'stopped', |
| 'stop reason = Use of deallocated memory']) |
| |
| # make sure the 'memory history' command still works even when we're |
| # generating a report now |
| self.expect( |
| "memory history 'another_pointer'", |
| substrs=[ |
| 'Memory allocated by Thread', |
| 'a.out`f1', |
| 'main.c:%d' % |
| self.line_malloc2]) |
