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"""
Test change libc++ std::atomic values.
"""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class LibcxxChangeValueTestCase(TestBase):
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
@add_test_categories(["libc++"])
@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24772")
def test(self):
"""Test that we can change values of libc++ std::atomic."""
self.build()
self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
bkpt = self.target().FindBreakpointByID(
lldbutil.run_break_set_by_source_regexp(
self, "Set break point at this line."
)
)
self.runCmd("run", RUN_SUCCEEDED)
# Get Frame #0.
target = self.dbg.GetSelectedTarget()
process = target.GetProcess()
self.assertState(process.GetState(), lldb.eStateStopped)
thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
self.assertTrue(
thread.IsValid(),
"There should be a thread stopped due to breakpoint condition",
)
frame0 = thread.GetFrameAtIndex(0)
self.assertTrue(frame0.IsValid(), "Got a valid frame.")
q_value = frame0.FindVariable("Q")
self.assertTrue(q_value.IsValid(), "Got the SBValue for val")
inner_val = q_value.GetChildAtIndex(0)
self.assertTrue(inner_val.IsValid(), "Got the SBValue for inner atomic val")
result = inner_val.SetValueFromCString("42")
self.assertTrue(result, "Setting val returned True.")
result = inner_val.GetValueAsUnsigned()
self.assertEqual(result, 42, "Got correct value (42)")
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