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# Copyright 2014-2016 Insight Software Consortium.
# Copyright 2004-2009 Roman Yakovenko.
# Distributed under the Boost Software License, Version 1.0.
# See http://www.boost.org/LICENSE_1_0.txt
from . import autoconfig
from pygccxml import parser
from pygccxml import declarations
TEST_FILES = ["test_non_copyable_recursive.hpp"]
def test_infinite_recursion_base_classes():
"""
Test find_noncopyable_vars
See #71
find_noncopyable_vars was throwing:
RuntimeError: maximum recursion depth exceeded while
calling a Python object
"""
config = autoconfig.cxx_parsers_cfg.config.clone()
decls = parser.parse(TEST_FILES, config)
global_ns = declarations.get_global_namespace(decls)
# Description of the problem (before the fix):
# find_noncopyable_vars (on Child class) looks up the variables,
# and finds aBasePtr2 (a pointer to the Base2 class).
# Then it looks recursively at the base classes of Base2, and finds
# Base1. Then, it looks up the variables from Base, to check if Base1
# is non copyable. It finds another aBasePtr2 variable, which leads to
# a new check of Base2; this recurses infinitely.
test_ns = global_ns.namespace('Test1')
cls = test_ns.class_('Child')
declarations.type_traits_classes.find_noncopyable_vars(cls)
assert declarations.type_traits_classes.is_noncopyable(cls) is True
def test_infinite_recursion_sstream():
"""
Test find_noncopyable_vars
See #71
find_noncopyable_vars was throwing:
RuntimeError: maximum recursion depth exceeded while
calling a Python object
"""
config = autoconfig.cxx_parsers_cfg.config.clone()
decls = parser.parse(TEST_FILES, config)
global_ns = declarations.get_global_namespace(decls)
# Real life example of the bug. This leads to a similar error,
# but the situation is more complex as there are multiple
# classes that are related the one to the others
# (basic_istream, basic_ios, ios_base, ...)
test_ns = global_ns.namespace('Test2')
cls = test_ns.class_('FileStreamDataStream')
declarations.type_traits_classes.find_noncopyable_vars(cls)
assert declarations.type_traits_classes.is_noncopyable(cls) is False
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