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Make sure that *any* object whose id() is used as a memo key is kept 

alive in the memo.  This fixes SF bug 592567.
This commit is contained in:
Guido van Rossum 2002-08-12 20:20:08 +00:00
parent 547607c4bf
commit 611546005b
1 changed files with 1 additions and 2 deletions
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3
Lib/copy.py
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@ -185,6 +185,7 @@ def deepcopy(x, memo = None):
else: else:
y = copierfunction(x, memo) y = copierfunction(x, memo)
memo[d] = y memo[d] = y
_keep_alive(x, memo) # Make sure x lives at least as long as d
return y return y
_deepcopy_dispatch = d = {} _deepcopy_dispatch = d = {}
@ -269,7 +270,6 @@ def _deepcopy_inst(x, memo):
return x.__deepcopy__(memo) return x.__deepcopy__(memo)
if hasattr(x, '__getinitargs__'): if hasattr(x, '__getinitargs__'):
args = x.__getinitargs__() args = x.__getinitargs__()
_keep_alive(args, memo)
args = deepcopy(args, memo) args = deepcopy(args, memo)
y = apply(x.__class__, args) y = apply(x.__class__, args)
else: else:
@ -278,7 +278,6 @@ def _deepcopy_inst(x, memo):
memo[id(x)] = y memo[id(x)] = y
if hasattr(x, '__getstate__'): if hasattr(x, '__getstate__'):
state = x.__getstate__() state = x.__getstate__()
_keep_alive(state, memo)
else: else:
state = x.__dict__ state = x.__dict__
state = deepcopy(state, memo) state = deepcopy(state, memo)