"""
Test the printing of anonymous and named namespace variables.
"""
import unittest
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class NamespaceLookupTestCase(TestBase):
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Break inside different scopes and evaluate value
self.line_break_global_scope = line_number("ns.cpp", "// BP_global_scope")
self.line_break_file_scope = line_number("ns2.cpp", "// BP_file_scope")
self.line_break_ns_scope = line_number("ns2.cpp", "// BP_ns_scope")
self.line_break_nested_ns_scope = line_number(
"ns2.cpp", "// BP_nested_ns_scope"
)
self.line_break_nested_ns_scope_after_using = line_number(
"ns2.cpp", "// BP_nested_ns_scope_after_using"
)
self.line_break_before_using_directive = line_number(
"ns3.cpp", "// BP_before_using_directive"
)
self.line_break_after_using_directive = line_number(
"ns3.cpp", "// BP_after_using_directive"
)
def runToBkpt(self, command):
self.runCmd(command, RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint.
self.expect(
"thread list",
STOPPED_DUE_TO_BREAKPOINT,
substrs=["stopped", "stop reason = breakpoint"],
)
@skipIfWindows # This is flakey on Windows: llvm.org/pr38373
@unittest.expectedFailure # CU-local objects incorrectly scoped
def test_scope_lookup_with_run_command_globals(self):
"""Test scope lookup of functions in lldb."""
self.build()
lldbutil.run_to_source_breakpoint(
self, self.line_break_global_scope, lldb.SBFileSpec("ns.cpp")
)
lldbutil.run_break_set_by_file_and_line(
self,
"ns3.cpp",
self.line_break_before_using_directive,
num_expected_locations=1,
loc_exact=False,
)
lldbutil.run_break_set_by_file_and_line(
self,
"ns3.cpp",
self.line_break_after_using_directive,
num_expected_locations=1,
loc_exact=False,
)
# Run to BP_global_scope at file scope
self.runToBkpt("run")
# FIXME: LLDB does not correctly scope CU-local objects.
# LLDB currently lumps functions from all files into
# a single AST and depending on the order with which
# functions are considered, LLDB can incorrectly call
# the static local ns.cpp::func() instead of the expected
# ::func()
# Evaluate func() - should call ::func()
self.expect_expr("func()", expect_type="int", expect_value="1")
# Evaluate ::func() - should call A::func()
self.expect_expr("::func()", result_type="int", result_value="1")
# Continue to BP_before_using_directive at file scope
self.runToBkpt("continue")
# Evaluate func() - should call ::func()
self.expect_expr("func()", result_type="int", result_value="1")
# Evaluate ::func() - should call ::func()
self.expect_expr("::func()", result_type="int", result_value="1")
# Continue to BP_after_using_directive at file scope
self.runToBkpt("continue")
# Evaluate ::func() - should call ::func()
self.expect_expr("::func()", result_type="int", result_value="1")
@skipIfWindows # This is flakey on Windows: llvm.org/pr38373
def test_scope_lookup_with_run_command(self):
"""Test scope lookup of functions in lldb."""
self.build()
self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
lldbutil.run_break_set_by_file_and_line(
self,
"ns.cpp",
self.line_break_global_scope,
num_expected_locations=1,
loc_exact=False,
)
lldbutil.run_break_set_by_file_and_line(
self,
"ns2.cpp",
self.line_break_ns_scope,
num_expected_locations=1,
loc_exact=False,
)
lldbutil.run_break_set_by_file_and_line(
self,
"ns2.cpp",
self.line_break_nested_ns_scope,
num_expected_locations=1,
loc_exact=False,
)
lldbutil.run_break_set_by_file_and_line(
self,
"ns2.cpp",
self.line_break_nested_ns_scope_after_using,
num_expected_locations=1,
loc_exact=False,
)
lldbutil.run_break_set_by_file_and_line(
self,
"ns2.cpp",
self.line_break_file_scope,
num_expected_locations=1,
loc_exact=False,
)
lldbutil.run_break_set_by_file_and_line(
self,
"ns3.cpp",
self.line_break_before_using_directive,
num_expected_locations=1,
loc_exact=False,
)
lldbutil.run_break_set_by_file_and_line(
self,
"ns3.cpp",
self.line_break_after_using_directive,
num_expected_locations=1,
loc_exact=False,
)
# Run to BP_global_scope at global scope
self.runToBkpt("run")
# Evaluate A::B::func() - should call A::B::func()
self.expect_expr("A::B::func()", result_type="int", result_value="4")
# Evaluate func(10) - should call ::func(int)
self.expect_expr("func(10)", result_type="int", result_value="11")
# Evaluate A::foo() - should call A::foo()
self.expect_expr("A::foo()", result_type="int", result_value="42")
# Continue to BP_file_scope at file scope
self.runToBkpt("continue")
# FIXME: In DWARF 5 with dsyms, the ordering of functions is slightly
# different, which also hits the same issues mentioned previously.
if configuration.dwarf_version <= 4 or self.getDebugInfo() == "dwarf":
self.expect_expr("func()", result_type="int", result_value="2")
# Continue to BP_ns_scope at ns scope
self.runToBkpt("continue")
# Evaluate func(10) - should call A::func(int)
self.expect_expr("func(10)", result_type="int", result_value="13")
# Evaluate B::func() - should call B::func()
self.expect_expr("B::func()", result_type="int", result_value="4")
# Evaluate func() - should call A::func()
self.expect_expr("func()", result_type="int", result_value="3")
# Continue to BP_nested_ns_scope at nested ns scope
self.runToBkpt("continue")
# Evaluate func() - should call A::B::func()
self.expect_expr("func()", result_type="int", result_value="4")
# Evaluate A::func() - should call A::func()
self.expect_expr("A::func()", result_type="int", result_value="3")
# Evaluate func(10) - should call A::func(10)
# NOTE: Under the rules of C++, this test would normally get an error
# because A::B::func() hides A::func(), but lldb intentionally
# disobeys these rules so that the intended overload can be found
# by only removing duplicates if they have the same type.
self.expect_expr("func(10)", result_type="int", result_value="13")
# Continue to BP_nested_ns_scope_after_using at nested ns scope after
# using declaration
self.runToBkpt("continue")
# Evaluate A::func(10) - should call A::func(int)
self.expect_expr("A::func(10)", result_type="int", result_value="13")
# Continue to BP_before_using_directive at global scope before using
# declaration
self.runToBkpt("continue")
# Evaluate B::func() - should call B::func()
self.expect_expr("B::func()", result_type="int", result_value="4")
# Continue to BP_after_using_directive at global scope after using
# declaration
self.runToBkpt("continue")
# Evaluate B::func() - should call B::func()
self.expect_expr("B::func()", result_type="int", result_value="4")
@unittest.expectedFailure # lldb scope lookup of functions bugs
def test_function_scope_lookup_with_run_command(self):
"""Test scope lookup of functions in lldb."""
self.build()
self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
lldbutil.run_break_set_by_file_and_line(
self,
"ns.cpp",
self.line_break_global_scope,
num_expected_locations=1,
loc_exact=False,
)
lldbutil.run_break_set_by_file_and_line(
self,
"ns2.cpp",
self.line_break_ns_scope,
num_expected_locations=1,
loc_exact=False,
)
# Run to BP_global_scope at global scope
self.runToBkpt("run")
# Evaluate foo() - should call ::foo()
# FIXME: lldb finds Y::foo because lookup for variables is done
# before functions.
self.expect_expr("foo()", result_type="int", result_value="42")
# Evaluate ::foo() - should call ::foo()
# FIXME: lldb finds Y::foo because lookup for variables is done
# before functions and :: is ignored.
self.expect_expr("::foo()", result_type="int", result_value="42")
# Continue to BP_ns_scope at ns scope
self.runToBkpt("continue")
# Evaluate foo() - should call A::foo()
# FIXME: lldb finds Y::foo because lookup for variables is done
# before functions.
self.expect_expr("foo()", result_type="int", result_value="42")
# NOTE: this test may fail on older systems that don't emit import
# entries in DWARF - may need to add checks for compiler versions here.
@skipIf(compiler="gcc", oslist=["linux"], debug_info=["dwo"]) # Skip to avoid crash
def test_scope_after_using_directive_lookup_with_run_command(self):
"""Test scope lookup after using directive in lldb."""
self.build()
self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
lldbutil.run_break_set_by_file_and_line(
self,
"ns3.cpp",
self.line_break_after_using_directive,
num_expected_locations=1,
loc_exact=False,
)
# Run to BP_after_using_directive at global scope after using
# declaration
self.runToBkpt("run")
# Evaluate func2() - should call A::func2()
self.expect_expr("func2()", result_type="int", result_value="3")
@unittest.expectedFailure # lldb scope lookup after using declaration bugs
# NOTE: this test may fail on older systems that don't emit import
# emtries in DWARF - may need to add checks for compiler versions here.
def test_scope_after_using_declaration_lookup_with_run_command(self):
"""Test scope lookup after using declaration in lldb."""
self.build()
self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
lldbutil.run_break_set_by_file_and_line(
self,
"ns2.cpp",
self.line_break_nested_ns_scope_after_using,
num_expected_locations=1,
loc_exact=False,
)
# Run to BP_nested_ns_scope_after_using at nested ns scope after using
# declaration
self.runToBkpt("run")
# Evaluate func() - should call A::func()
self.expect_expr("func()", result_type="int", result_value="3")
@unittest.expectedFailure # lldb scope lookup ambiguity after using bugs
def test_scope_ambiguity_after_using_lookup_with_run_command(self):
"""Test scope lookup ambiguity after using in lldb."""
self.build()
self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
lldbutil.run_break_set_by_file_and_line(
self,
"ns3.cpp",
self.line_break_after_using_directive,
num_expected_locations=1,
loc_exact=False,
)
# Run to BP_after_using_directive at global scope after using
# declaration
self.runToBkpt("run")
# Evaluate func() - should get error: ambiguous
# FIXME: This test fails because lldb removes duplicates if they have
# the same type.
self.expect("expr -- func()", startstr="error")
def test_scope_lookup_shadowed_by_using_with_run_command(self):
"""Test scope lookup shadowed by using in lldb."""
self.build()
self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
lldbutil.run_break_set_by_file_and_line(
self,
"ns2.cpp",
self.line_break_nested_ns_scope,
num_expected_locations=1,
loc_exact=False,
)
# Run to BP_nested_ns_scope at nested ns scope
self.runToBkpt("run")
# Evaluate func(10) - should call A::func(10)
# NOTE: Under the rules of C++, this test would normally get an error
# because A::B::func() shadows A::func(), but lldb intentionally
# disobeys these rules so that the intended overload can be found
# by only removing duplicates if they have the same type.
self.expect_expr("func(10)", result_type="int", result_value="13")
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