Make sure that *any* object whose id() is used as a memo key is kept
alive in the memo. This fixes SF bug 592567.
diff --git a/Lib/copy.py b/Lib/copy.py
index 7d06042..e2474fe 100644
--- a/Lib/copy.py
+++ b/Lib/copy.py
@@ -185,6 +185,7 @@
else:
y = copierfunction(x, memo)
memo[d] = y
+ _keep_alive(x, memo) # Make sure x lives at least as long as d
return y
_deepcopy_dispatch = d = {}
@@ -269,7 +270,6 @@
return x.__deepcopy__(memo)
if hasattr(x, '__getinitargs__'):
args = x.__getinitargs__()
- _keep_alive(args, memo)
args = deepcopy(args, memo)
y = apply(x.__class__, args)
else:
@@ -278,7 +278,6 @@
memo[id(x)] = y
if hasattr(x, '__getstate__'):
state = x.__getstate__()
- _keep_alive(state, memo)
else:
state = x.__dict__
state = deepcopy(state, memo)