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"""
Test lldb data formatter subsystem.
"""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class LibCxxAtomicTestCase(TestBase):
def get_variable(self, name):
var = self.frame().FindVariable(name)
var.SetPreferDynamicValue(lldb.eDynamicCanRunTarget)
var.SetPreferSyntheticValue(True)
return var
@skipIf(compiler=["gcc"])
@add_test_categories(["libc++"])
def test(self):
"""Test that std::atomic as defined by libc++ is correctly printed by LLDB"""
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)
lldbutil.skip_if_library_missing(
self, self.target(), lldbutil.PrintableRegex("libc\+\+")
)
# The stop reason of the thread should be breakpoint.
self.expect(
"thread list",
STOPPED_DUE_TO_BREAKPOINT,
substrs=["stopped", "stop reason = breakpoint"],
)
s_atomic = self.get_variable("s")
i_atomic = self.get_variable("i")
if self.TraceOn():
print(s_atomic)
if self.TraceOn():
print(i_atomic)
# Extract the content of the std::atomic wrappers.
self.assertEqual(s_atomic.GetNumChildren(), 1)
s = s_atomic.GetChildAtIndex(0)
self.assertEqual(i_atomic.GetNumChildren(), 1)
i = i_atomic.GetChildAtIndex(0)
self.assertEqual(i.GetValueAsUnsigned(0), 5, "i == 5")
self.assertEqual(s.GetNumChildren(), 2, "s has two children")
self.assertEqual(s.GetChildAtIndex(0).GetValueAsUnsigned(0), 1, "s.x == 1")
self.assertEqual(s.GetChildAtIndex(1).GetValueAsUnsigned(0), 2, "s.y == 2")
# Try printing the child that points to its own parent object.
# This should just treat the atomic pointer as a normal pointer.
self.expect("frame var p.child", substrs=["Value = 0x"])
self.expect("frame var p", substrs=["parent = {", "Value = 0x", "}"])
self.expect(
"frame var p.child.parent", substrs=["p.child.parent = {\n Value = 0x"]
)
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