File: TestArgumentPassingRestrictions.py

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"""
This is a test to ensure that both lldb is reconstructing the right
calling convention for a CXXRecordDecl as represented by:

   DW_CC_pass_by_reference
   DW_CC_pass_by_value

and to also make sure that the ASTImporter is copying over this
setting when importing the CXXRecordDecl via setArgPassingRestrictions.
"""

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


class TestArgumentPassingRestrictions(TestBase):
    @skipIf(compiler="clang", compiler_version=["<", "7.0"])
    def test_argument_passing_restrictions(self):
        self.build()

        lldbutil.run_to_source_breakpoint(
            self, "// break here", lldb.SBFileSpec("main.cpp")
        )

        self.expect_expr(
            "returnPassByRef()",
            result_type="PassByRef",
            result_children=[ValueCheck(name="x", value="11223344")],
        )

        self.expect_expr("takePassByRef(p)", result_type="int", result_value="42")