| """ |
| Test the AddressSanitizer runtime support for report breakpoint and data extraction. |
| """ |
| |
| import os, time |
| import unittest2 |
| import lldb |
| from lldbtest import * |
| import lldbutil |
| import json |
| |
| class AsanTestReportDataCase(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 |
| |
| @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") |
| @skipIfRemote |
| @dsym_test |
| def test_with_dsym (self): |
| compiler = self.findBuiltClang () |
| self.buildDsym (None, compiler) |
| self.asan_tests () |
| |
| @skipIfFreeBSD # llvm.org/pr21136 runtimes not yet available by default |
| @skipIfRemote |
| @dwarf_test |
| def test_with_dwarf (self): |
| compiler = self.findBuiltClang () |
| self.buildDwarf (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') |
| 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 = exec']) |
| |
| # 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) |
| |
| if __name__ == '__main__': |
| import atexit |
| lldb.SBDebugger.Initialize() |
| atexit.register(lambda: lldb.SBDebugger.Terminate()) |
| unittest2.main() |
