| """Test stepping over vrs. hitting breakpoints & subsequent stepping in various forms.""" |
| |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| from lldbsuite.test_event.build_exception import BuildError |
| |
| |
| class StepUntilTestCase(TestBase): |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # Find the line numbers that we will step to in main: |
| self.main_source = "main.c" |
| self.less_than_two = line_number("main.c", "Less than 2") |
| self.greater_than_two = line_number("main.c", "Greater than or equal to 2.") |
| self.back_out_in_main = line_number("main.c", "Back out in main") |
| self.in_foo = line_number("main.c", "In foo") |
| |
| def _build_dict_for_discontinuity(self): |
| return dict( |
| CFLAGS_EXTRAS="-funique-basic-block-section-names " |
| + "-ffunction-sections -fbasic-block-sections=list=" |
| + self.getSourcePath("function.list"), |
| LD_EXTRAS="-Wl,--script=" + self.getSourcePath("symbol.order"), |
| ) |
| |
| def _common_setup(self, build_dict, args): |
| self.build(dictionary=build_dict) |
| exe = self.getBuildArtifact("a.out") |
| |
| target = self.dbg.CreateTarget(exe) |
| self.assertTrue(target, VALID_TARGET) |
| |
| main_source_spec = lldb.SBFileSpec(self.main_source) |
| break_before = target.BreakpointCreateBySourceRegex( |
| "At the start", main_source_spec |
| ) |
| self.assertTrue(break_before, VALID_BREAKPOINT) |
| |
| # Now launch the process, and do not stop at entry point. |
| process = target.LaunchSimple(args, None, self.get_process_working_directory()) |
| |
| self.assertTrue(process, PROCESS_IS_VALID) |
| |
| # The stop reason of the thread should be breakpoint. |
| threads = lldbutil.get_threads_stopped_at_breakpoint(process, break_before) |
| |
| if len(threads) != 1: |
| self.fail("Failed to stop at first breakpoint in main.") |
| |
| thread = threads[0] |
| return thread |
| |
| def do_until(self, args, until_lines, expected_linenum): |
| thread = self._common_setup(None, args) |
| |
| cmd_interp = self.dbg.GetCommandInterpreter() |
| ret_obj = lldb.SBCommandReturnObject() |
| |
| cmd_line = "thread until" |
| for line_num in until_lines: |
| cmd_line += " %d" % (line_num) |
| |
| cmd_interp.HandleCommand(cmd_line, ret_obj) |
| self.assertTrue( |
| ret_obj.Succeeded(), "'%s' failed: %s." % (cmd_line, ret_obj.GetError()) |
| ) |
| |
| frame = thread.frames[0] |
| line = frame.GetLineEntry().GetLine() |
| self.assertEqual( |
| line, expected_linenum, "Did not get the expected stop line number" |
| ) |
| |
| def test_hitting_one(self): |
| """Test thread step until - targeting one line and hitting it.""" |
| self.do_until(None, [self.less_than_two], self.less_than_two) |
| |
| def test_targetting_two_hitting_first(self): |
| """Test thread step until - targeting two lines and hitting one.""" |
| self.do_until( |
| ["foo", "bar", "baz"], |
| [self.less_than_two, self.greater_than_two], |
| self.greater_than_two, |
| ) |
| |
| def test_targetting_two_hitting_second(self): |
| """Test thread step until - targeting two lines and hitting the other one.""" |
| self.do_until( |
| None, [self.less_than_two, self.greater_than_two], self.less_than_two |
| ) |
| |
| def test_missing_one(self): |
| """Test thread step until - targeting one line and missing it by stepping out to call site""" |
| self.do_until( |
| ["foo", "bar", "baz"], [self.less_than_two], self.back_out_in_main |
| ) |
| |
| @no_debug_info_test |
| def test_bad_line(self): |
| """Test that we get an error if attempting to step outside the current |
| function""" |
| thread = self._common_setup(None, None) |
| self.expect( |
| f"thread until {self.in_foo}", |
| substrs=["Until target outside of the current function"], |
| error=True, |
| ) |
| |
| @no_debug_info_test |
| @skipIf(oslist=lldbplatformutil.getDarwinOSTriples() + ["windows"]) |
| @skipIf(archs=no_match(["x86_64", "aarch64"])) |
| @skipIf(compiler=no_match(["clang"])) |
| def test_bad_line_discontinuous(self): |
| """Test that we get an error if attempting to step outside the current |
| function -- and the function is discontinuous""" |
| try: |
| self.build(dictionary=self._build_dict_for_discontinuity()) |
| except BuildError as ex: |
| self.skipTest(f"failed to build with linker script.") |
| |
| _, _, thread, _ = lldbutil.run_to_source_breakpoint( |
| self, "At the start", lldb.SBFileSpec(self.main_source) |
| ) |
| self.expect( |
| f"thread until {self.in_foo}", |
| substrs=["Until target outside of the current function"], |
| error=True, |
| ) |
