Del statement inference enabled pyregr.test_descr testcase and it SIGSEGVs.
Here is minimal example:
import unittest
import sys
class Foo(unittest.TestCase):
def test_file_fault(self):
# Testing sys.stdout is changed in getattr...
test_stdout = sys.stdout
class StdoutGuard:
def __getattr__(self, attr):
test_stdout.write('%d\n' % sys.getrefcount(self))
sys.stdout = test_stdout #sys.__stdout__
test_stdout.write('%d\n' % sys.getrefcount(self))
test_stdout.write('getattr: %r\n' % attr)
test_stdout.flush()
raise RuntimeError("Premature access to sys.stdout.%s" % attr)
sys.stdout = StdoutGuard()
try:
print "Oops!"
except RuntimeError:
pass
finally:
sys.stdout = test_stdout
def test_getattr_hooks(self):
pass
from test import test_support
test_support.run_unittest(Foo)
It works in python and sigsegvs in cython.
It seems to me that the problem is StdoutGuard() is still used when
its reference counter is zero since Python interpreter does
Py_XINCREF() for file object and __Pyx_Print() doesn't.
--
vitja.
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