src/llvm-project/lldb/test/API/commands/expression/issue_11588/Test11588.py

"""
Test the solution to issue 11581.
valobj.AddressOf() returns None when an address is
expected in a SyntheticChildrenProvider
"""


import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil


class Issue11581TestCase(TestBase):
    @skipIfWindows  # This test is now flaky on windows, see llvm.org/pr24778
    def test_11581_commands(self):
        # This is the function to remove the custom commands in order to have a
        # clean slate for the next test case.
        def cleanup():
            self.runCmd("type synthetic clear", check=False)

        # Execute the cleanup function during test case tear down.
        self.addTearDownHook(cleanup)

        """valobj.AddressOf() should return correct values."""
        self.build()

        (target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
            self, "Set breakpoint here.", lldb.SBFileSpec("main.cpp", False)
        )
        self.runCmd("command script import --allow-reload s11588.py")
        self.runCmd(
            "type synthetic add --python-class s11588.Issue11581SyntheticProvider StgClosure"
        )

        self.expect(
            "expr --show-types -- *((StgClosure*)(r14-1))",
            substrs=[
                "(StgClosure) $",
                "(StgClosure *) &$",
                "0x",
                "addr = ",
                "load_address = ",
            ],
        )

        # register r14 is an x86_64 extension let's skip this part of the test
        # if we are on a different architecture
        if self.getArchitecture() == "x86_64":
            target = self.dbg.GetSelectedTarget()
            process = target.GetProcess()
            frame = process.GetSelectedThread().GetSelectedFrame()
            pointer = frame.FindVariable("r14")
            addr = pointer.GetValueAsUnsigned(0)
            self.assertNotEqual(addr, 0, "could not read pointer to StgClosure")
            addr = addr - 1
            self.runCmd("register write r14 %d" % addr)
            self.expect(
                "register read r14", substrs=["0x", hex(addr)[2:].rstrip("L")]
            )  # Remove trailing 'L' if it exists
            self.expect(
                "expr --show-types -- *(StgClosure*)$r14",
                substrs=[
                    "(StgClosure) $",
                    "(StgClosure *) &$",
                    "0x",
                    hex(addr)[2:].rstrip("L"),
                    "addr = ",
                    str(addr),
                    "load_address = ",
                    str(addr),
                ],
            )