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# Calls to PyIter_Next, or direct calls to tp_iternext, on an object
# which might no longer be an iterable because its 'next' method was
# removed. These are all variants of Issue3720.
"""
Run this script with an argument between 1 and <N> to test for
different crashes.
"""
N = 8
import sys
class Foo(object):
def __iter__(self):
return self
def next(self):
del Foo.next
return (1, 2)
def case1():
list(enumerate(Foo()))
def case2():
x, y = Foo()
def case3():
filter(None, Foo())
def case4():
map(None, Foo(), Foo())
def case5():
max(Foo())
def case6():
sum(Foo(), ())
def case7():
dict(Foo())
def case8():
sys.stdout.writelines(Foo())
# etc...
if __name__ == '__main__':
if len(sys.argv) < 2:
print __doc__.replace('<N>', str(N))
else:
n = int(sys.argv[1])
func = globals()['case%d' % n]
func()
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