| """ |
| Test that a variable watchpoint should only hit when in scope. |
| """ |
| |
| from __future__ import print_function |
| |
| |
| import unittest2 |
| import os |
| import time |
| import lldb |
| from lldbsuite.test.lldbtest import * |
| import lldbsuite.test.lldbutil as lldbutil |
| from lldbsuite.test.decorators import * |
| |
| |
| class WatchedVariableHitWhenInScopeTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| # This test depends on not tracking watchpoint expression hits if we have |
| # left the watchpoint scope. We will provide such an ability at some point |
| # but the way this was done was incorrect, and it is unclear that for the |
| # most part that's not what folks mostly want, so we have to provide a |
| # clearer API to express this. |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # Our simple source filename. |
| self.source = 'main.c' |
| self.exe_name = self.testMethodName |
| self.d = {'C_SOURCES': self.source, 'EXE': self.exe_name} |
| |
| # Test hangs due to a kernel bug, see fdfeff0f in the linux kernel for details |
| @skipIfTargetAndroid(api_levels=list(range(25+1)), archs=["aarch64", "arm"]) |
| @skipIf |
| def test_watched_var_should_only_hit_when_in_scope(self): |
| """Test that a variable watchpoint should only hit when in scope.""" |
| self.build(dictionary=self.d) |
| self.setTearDownCleanup(dictionary=self.d) |
| |
| exe = self.getBuildArtifact(self.exe_name) |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) |
| |
| # Add a breakpoint to set a watchpoint when stopped in main. |
| lldbutil.run_break_set_by_symbol( |
| self, "main", num_expected_locations=-1) |
| |
| # Run the program. |
| self.runCmd("run", RUN_SUCCEEDED) |
| |
| # We should be stopped again due to the breakpoint. |
| # The stop reason of the thread should be breakpoint. |
| self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, |
| substrs=['stopped', |
| 'stop reason = breakpoint']) |
| |
| # Now let's set a watchpoint for 'c.a'. |
| # There should be only one watchpoint hit (see main.c). |
| self.expect("watchpoint set variable c.a", WATCHPOINT_CREATED, |
| substrs=['Watchpoint created', 'size = 4', 'type = w']) |
| |
| # Use the '-v' option to do verbose listing of the watchpoint. |
| # The hit count should be 0 initially. |
| self.expect("watchpoint list -v", |
| substrs=['hit_count = 0']) |
| |
| self.runCmd("process continue") |
| |
| # We should be stopped again due to the watchpoint (write type), but |
| # only once. The stop reason of the thread should be watchpoint. |
| self.expect("thread list", STOPPED_DUE_TO_WATCHPOINT, |
| substrs=['stopped', |
| 'stop reason = watchpoint']) |
| |
| self.runCmd("process continue") |
| # Don't expect the read of 'global' to trigger a stop exception. |
| # The process status should be 'exited'. |
| self.expect("process status", |
| substrs=['exited']) |
| |
| # Use the '-v' option to do verbose listing of the watchpoint. |
| # The hit count should now be 1. |
| self.expect("watchpoint list -v", |
| substrs=['hit_count = 1']) |