| """ |
| Test that ASan memory history provider returns correct stack traces |
| """ |
| |
| import lldb_shared |
| |
| import os, time |
| import lldb |
| from lldbtest import * |
| import lldbutil |
| |
| class AsanTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| # The default compiler ("clang") may not support Address Sanitizer or it |
| # may not have the debugging API which was recently added, so we're calling |
| # self.useBuiltClang() to use clang from the llvm-build directory instead |
| |
| @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 |
| def test (self): |
| compiler = self.findBuiltClang () |
| self.build (None, compiler) |
| 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 = os.path.join (os.getcwd(), "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") |
| |
| # ASan will relaunch the process to insert its library. |
| self.expect("thread list", "Process should be stopped due to exec.", |
| substrs = ['stopped', 'stop reason = exec']) |
| |
| 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 at', 'a.out`f1', 'main.c:%d' % self.line_malloc, |
| 'Memory deallocated at', '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) |
| |
| # now let's break when an ASan report occurs and try the API then |
| self.runCmd("breakpoint set -n __asan_report_error") |
| |
| 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']) |
| |
| # 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 at', 'a.out`f1', 'main.c:%d' % self.line_malloc2]) |