| """Test that we don't read objc class tables early in process startup.""" |
| |
| |
| import time |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class TestEarlyProcessLaunch(TestBase): |
| NO_DEBUG_INFO_TESTCASE = True |
| |
| @skipUnlessDarwin |
| @skipIfAsan # rdar://103359354 |
| @skipIfOutOfTreeDebugserver # 2022-12-13 FIXME: skipping system debugserver |
| # until this feature is included in the system |
| # debugserver. |
| @add_test_categories(["pyapi"]) |
| def test_early_process_launch(self): |
| """Test that we don't read objc class tables early in proc startup""" |
| self.build() |
| |
| ### |
| ### Hit a breakpoint on the first malloc() call, which |
| ### is before libSystem has finished initializing. At |
| ### this point, we should not read the objc class tables. |
| ### Then continue to main(), which is past libSystem |
| ### initializing. Try again, and they should be read. |
| ### |
| ### Use the types logging to detect the difference. |
| |
| target, process, _, bkpt = lldbutil.run_to_name_breakpoint(self, "malloc") |
| |
| target.DisableAllBreakpoints() |
| target.BreakpointCreateByName("main") |
| |
| logfile_early = os.path.join(self.getBuildDir(), "types-log-early.txt") |
| self.addTearDownHook(lambda: self.runCmd("log disable lldb types")) |
| self.runCmd("log enable -f %s lldb types" % logfile_early) |
| self.runCmd("expression global = 15") |
| |
| err = process.Continue() |
| self.assertTrue(err.Success()) |
| |
| logfile_later = os.path.join(self.getBuildDir(), "types-log-later.txt") |
| self.runCmd("log enable -f %s lldb types" % logfile_later) |
| self.runCmd("expression global = 25") |
| |
| self.assertTrue(os.path.exists(logfile_early)) |
| self.assertTrue(os.path.exists(logfile_later)) |
| early_text = open(logfile_early).read() |
| later_text = open(logfile_later).read() |
| |
| self.assertIn("ran: no, retry: yes", early_text) |
| self.assertNotIn("ran: no, retry: yes", later_text) |
| |
| self.assertNotIn("ran: yes, retry: no", early_text) |
| self.assertIn("ran: yes, retry: no", later_text) |
