| """ |
| Test that we can backtrace correctly with 'sigtramp' functions on the stack |
| """ |
| |
| 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 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 |
| @expectedFailureAll(oslist=["ios", "watchos", "tvos", "bridgeos"], bugnumber="<rdar://problem/34006863>") # lldb skips 1 frame on arm64 above _sigtramp |
| def test(self): |
| """Test that we can backtrace correctly with _sigtramp on the stack""" |
| self.build() |
| self.setTearDownCleanup() |
| |
| exe = self.getBuildArtifact("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 not found_handler: |
| self.fail("Unable to find handler() in backtrace.") |
| |
| if not found_sigtramp: |
| self.fail("Unable to find _sigtramp() in backtrace.") |
| |
| if not found_kill: |
| self.fail("Unable to find kill() in backtrace.") |
| |
| if not found_main: |
| self.fail("Unable to find main() in backtrace.") |
