xref: /llvm-project-15.0.7/lldb/test/API/lang/cpp/function-local-class/TestCppFunctionLocalClass.py (revision 4cc8f2a0)

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

class TestCase(TestBase):

    @no_debug_info_test
    def test(self):
        self.build()
        lldbutil.run_to_source_breakpoint(self, "// break here", lldb.SBFileSpec("main.cpp"))

        m_val = self.expect_expr("m", result_type="WithMember", result_children=[
            ValueCheck(name="i", value="1")
        ])
        # FIXME: The non-display name doesn't include the function, so users
        # can't actually match specific classes by their name. Either document
        # or fix this.
        self.assertEqual(m_val.GetType().GetName(), "WithMember")
        # Try accessing the type in the expression evaluator.
        self.expect_expr("m.i", result_type="int", result_value="1")

        self.expect_expr("typedef_unnamed", result_type="TypedefUnnamed", result_children=[
            ValueCheck(name="a", value="2")
        ])
        self.expect_expr("typedef_unnamed2", result_type="TypedefUnnamed2", result_children=[
            ValueCheck(name="b", value="3")
        ])
        self.expect_expr("unnamed", result_type="(unnamed struct)", result_children=[
            ValueCheck(name="i", value="4")
        ])
        self.expect_expr("unnamed2", result_type="(unnamed struct)", result_children=[
            ValueCheck(name="j", value="5")
        ])

        # Try a class that is only forward declared.
        self.expect_expr("fwd", result_type="Forward *")
        self.expect("expression -- fwd->i", error=True, substrs=[
            "member access into incomplete type 'Forward'"
        ])
        self.expect("expression -- *fwd", error=True, substrs=[
            "incomplete type 'Forward' where a complete type is required"
        ])

        # Try a class that has a name that matches a class in the global scope.
        self.expect_expr("fwd_conflict", result_type="ForwardConflict *")
        # FIXME: This pulls in the unrelated type with the same name from the
        # global scope.
        self.expect("expression -- fwd_conflict->i", error=True, substrs=[
            # This should point out that ForwardConflict is incomplete.
            "no member named 'i' in 'ForwardConflict'"
        ])
        self.expect("expression -- *fwd_conflict", error=True, substrs=[
            # This should fail to parse instead.
            "couldn't read its memory"
        ])