File: borrowed_ref_1.py

package info (click to toggle)
jython 2.5.3-3%2Bdeb8u1
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 43,404 kB
  • ctags: 105,521
  • sloc: python: 351,322; java: 216,346; xml: 1,547; sh: 330; perl: 124; ansic: 102; makefile: 101
file content (29 lines) | stat: -rw-r--r-- 398 bytes parent folder | download | duplicates (29) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
 
"""
_PyType_Lookup() returns a borrowed reference.
This attacks the call in dictobject.c.
"""

class A(object):
    pass

class B(object):
    def __del__(self):
        print 'hi'
        del D.__missing__

class D(dict):
    class __missing__:
        def __init__(self, *args):
            pass


d = D()
a = A()
a.cycle = a
a.other = B()
del a

prev = None
while 1:
    d[5]
    prev = (prev,)