50 lines · python
1"""2Test lldb ability to unwind a stack with a function containing a call to the3'__builtin_trap' intrinsic, which GCC (4.6) encodes to an illegal opcode.4"""5 6 7import lldb8from lldbsuite.test.decorators import *9from lldbsuite.test.lldbtest import *10from lldbsuite.test import lldbutil11 12 13class BuiltinTrapTestCase(TestBase):14 def setUp(self):15 # Call super's setUp().16 TestBase.setUp(self)17 # Find the line number to break at.18 self.line = line_number("main.cpp", "// Set break point at this line.")19 20 # gcc generates incorrect linetable21 @expectedFailureAll(archs="arm$", compiler="gcc", triple=".*-android")22 @expectedFailureAll(archs=["aarch64"], oslist=no_match(["freebsd", "linux"]))23 @skipIfWindows24 def test_with_run_command(self):25 """Test that LLDB handles a function with __builtin_trap correctly."""26 self.build()27 self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)28 29 lldbutil.run_break_set_by_file_and_line(30 self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True31 )32 33 self.runCmd("run", RUN_SUCCEEDED)34 35 # The stop reason of the thread should be breakpoint.36 self.expect(37 "thread list",38 STOPPED_DUE_TO_BREAKPOINT,39 substrs=["stopped", "stop reason = breakpoint"],40 )41 42 # print backtrace, expect both 'bar' and 'main' functions to be listed43 self.expect("bt", substrs=["bar", "main"])44 45 # go up one frame46 self.runCmd("up", RUN_SUCCEEDED)47 48 # evaluate a local49 self.expect("expression foo", substrs=["= 5"])50