| """ |
| Test lldb ability to unwind a stack with a function containing a call to the |
| '__builtin_trap' intrinsic, which GCC (4.6) encodes to an illegal opcode. |
| """ |
| |
| from __future__ import print_function |
| |
| |
| import os |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class BuiltinTrapTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # Find the line number to break at. |
| self.line = line_number('main.cpp', '// Set break point at this line.') |
| |
| # gcc generates incorrect linetable |
| @expectedFailureAll(archs="arm", compiler="gcc", triple=".*-android") |
| @expectedFailureAll(oslist=['linux'], archs=['arm']) |
| @skipIfWindows |
| def test_with_run_command(self): |
| """Test that LLDB handles a function with __builtin_trap correctly.""" |
| self.build() |
| self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET) |
| |
| lldbutil.run_break_set_by_file_and_line(self, "main.cpp", self.line, |
| num_expected_locations=1, |
| loc_exact=True) |
| |
| self.runCmd("run", RUN_SUCCEEDED) |
| |
| # The stop reason of the thread should be breakpoint. |
| self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, |
| substrs=['stopped', |
| 'stop reason = breakpoint']) |
| |
| # print backtrace, expect both 'bar' and 'main' functions to be listed |
| self.expect('bt', substrs=['bar', 'main']) |
| |
| # go up one frame |
| self.runCmd("up", RUN_SUCCEEDED) |
| |
| # evaluate a local |
| self.expect('p foo', substrs=['= 5']) |
