| """ |
| Check for an issue where capping does not work because the Target pointer appears to be changing behind our backs |
| """ |
| |
| |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class SyntheticCappingTestCase(TestBase): |
| 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.") |
| |
| def test_with_run_command(self): |
| """Check for an issue where capping does not work because the Target pointer appears to be changing behind our backs.""" |
| 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) |
| |
| process = self.dbg.GetSelectedTarget().GetProcess() |
| |
| # The stop reason of the thread should be breakpoint. |
| self.expect( |
| "thread list", |
| STOPPED_DUE_TO_BREAKPOINT, |
| substrs=["stopped", "stop reason = breakpoint"], |
| ) |
| |
| # This is the function to remove the custom formats in order to have a |
| # clean slate for the next test case. |
| def cleanup(): |
| self.runCmd("type format clear", check=False) |
| self.runCmd("type summary clear", check=False) |
| self.runCmd("type filter clear", check=False) |
| self.runCmd("type synth clear", check=False) |
| self.runCmd("settings set target.max-children-count 256", check=False) |
| |
| # Execute the cleanup function during test case tear down. |
| self.addTearDownHook(cleanup) |
| |
| # set up the synthetic children provider |
| self.runCmd("script from fooSynthProvider import *") |
| self.runCmd("type synth add -l fooSynthProvider foo") |
| |
| # note that the value of fake_a depends on target byte order |
| if process.GetByteOrder() == lldb.eByteOrderLittle: |
| fake_a_val = 0x02000000 |
| else: |
| fake_a_val = 0x00000100 |
| |
| # check that the synthetic children work, so we know we are doing the |
| # right thing |
| self.expect( |
| "frame variable f00_1", |
| substrs=[ |
| "a = 1", |
| "fake_a = %d" % fake_a_val, |
| "r = 34", |
| ], |
| ) |
| # num_children() should be called with at most max_num_children=257 |
| # (target.max-children-count + 1) |
| self.expect( |
| "script fooSynthProvider.reset_max_num_children_max()", substrs=["257"] |
| ) |
| |
| # check that capping works |
| self.runCmd("settings set target.max-children-count 2", check=False) |
| |
| self.expect( |
| "frame variable f00_1", |
| substrs=[ |
| "a = 1", |
| "fake_a = %d" % fake_a_val, |
| "...", |
| ], |
| ) |
| self.expect( |
| "script fooSynthProvider.reset_max_num_children_max()", substrs=["3"] |
| ) |
| |
| self.expect("frame variable f00_1", matching=False, substrs=["r = 34"]) |
| |
| self.runCmd("settings set target.max-children-count 256", check=False) |
| |
| self.expect("frame variable f00_1", matching=True, substrs=["r = 34"]) |
| self.expect( |
| "script fooSynthProvider.reset_max_num_children_max()", substrs=["257"] |
| ) |
