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| -rw-r--r-- | pypy/doc/cpython_differences.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/pypy/doc/cpython_differences.rst b/pypy/doc/cpython_differences.rst index af1981a704..32aa55335e 100644 --- a/pypy/doc/cpython_differences.rst +++ b/pypy/doc/cpython_differences.rst @@ -88,7 +88,9 @@ and the callback will not be invoked. (Issue `#2030`__) There are a few extra implications from the difference in the GC. Most notably, if an object has a ``__del__``, the ``__del__`` is never called more than once in PyPy; but CPython will call the same ``__del__`` several times -if the object is resurrected and dies again. The ``__del__`` methods are +if the object is resurrected and dies again (at least it is reliably so in +older CPythons; newer CPythons try to call destructors not more than once, +but there are counter-examples). The ``__del__`` methods are called in "the right" order if they are on objects pointing to each other, as in CPython, but unlike CPython, if there is a dead cycle of objects referencing each other, their ``__del__`` methods are called anyway; |