| """ |
| Test that we can backtrace correctly with 'sigtramp' functions on the stack |
| """ |
| |
| import lldb_shared |
| |
| import os, time |
| import lldb |
| from lldbtest import * |
| import lldbutil |
| |
| class SigtrampUnwind(TestBase): |
| mydir = TestBase.compute_mydir(__file__) |
| |
| # On different platforms the "_sigtramp" and "__kill" frames are likely to be different. |
| # This test could probably be adapted to run on linux/*bsd easily enough. |
| @skipUnlessDarwin |
| def test (self): |
| """Test that we can backtrace correctly with _sigtramp on the stack""" |
| self.build() |
| self.setTearDownCleanup() |
| |
| exe = os.path.join(os.getcwd(), "a.out") |
| target = self.dbg.CreateTarget(exe) |
| self.assertTrue(target, VALID_TARGET) |
| |
| |
| lldbutil.run_break_set_by_file_and_line (self, "main.c", line_number('main.c', '// Set breakpoint here'), num_expected_locations=1) |
| |
| process = target.LaunchSimple (None, None, self.get_process_working_directory()) |
| |
| if not process: |
| self.fail("SBTarget.Launch() failed") |
| |
| if process.GetState() != lldb.eStateStopped: |
| self.fail("Process should be in the 'stopped' state, " |
| "instead the actual state is: '%s'" % |
| lldbutil.state_type_to_str(process.GetState())) |
| |
| self.expect("pro handle -n false -p true -s false SIGUSR1", "Have lldb pass SIGUSR1 signals", |
| substrs = ["SIGUSR1", "true", "false", "false"]) |
| |
| lldbutil.run_break_set_by_symbol (self, "handler", num_expected_locations=1, module_name="a.out") |
| |
| self.runCmd("continue") |
| |
| thread = process.GetThreadAtIndex(0) |
| |
| found_handler = False |
| found_sigtramp = False |
| found_kill = False |
| found_main = False |
| |
| for f in thread.frames: |
| if f.GetFunctionName() == "handler": |
| found_handler = True |
| if f.GetFunctionName() == "_sigtramp": |
| found_sigtramp = True |
| if f.GetFunctionName() == "__kill": |
| found_kill = True |
| if f.GetFunctionName() == "main": |
| found_main = True |
| |
| if self.TraceOn(): |
| print "Backtrace once we're stopped:" |
| for f in thread.frames: |
| print " %d %s" % (f.GetFrameID(), f.GetFunctionName()) |
| |
| if found_handler == False: |
| self.fail("Unable to find handler() in backtrace.") |
| |
| if found_sigtramp == False: |
| self.fail("Unable to find _sigtramp() in backtrace.") |
| |
| if found_kill == False: |
| self.fail("Unable to find kill() in backtrace.") |
| |
| if found_main == False: |
| self.fail("Unable to find main() in backtrace.") |