--- /dev/null
+"""
+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.assertTrue(result == 42, "Got correct value (42)")