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| author | Michael W. Hudson <mwh@python.net> | 2002-03-05 15:37:18 (GMT) |
|---|---|---|
| committer | Michael W. Hudson <mwh@python.net> | 2002-03-05 15:37:18 (GMT) |
| commit | 8b34e6146145e50cde974cbbfd087838a05871c2 (patch) | |
| tree | 916dd513b7c5a7b6c4ce600945b07df676ed9297 | |
| parent | 7a4b55ddc09e1a1d3d5120413f8e17db460379bc (diff) | |
| download | cpython-8b34e6146145e50cde974cbbfd087838a05871c2.zip cpython-8b34e6146145e50cde974cbbfd087838a05871c2.tar.gz cpython-8b34e6146145e50cde974cbbfd087838a05871c2.tar.bz2 | |
backport gvanrossum's checkin of
revision 1.115 of test_descr.py
SF patch 514641 (Naofumi Honda) - Negative ob_size of LongObjects
Due to the bizarre definition of _PyLong_Copy(), creating an instance
of a subclass of long with a negative value could cause core dumps
later on. Unfortunately it looks like the behavior of _PyLong_Copy()
is quite intentional, so the fix is more work than feels comfortable.
This fix is almost, but not quite, the code that Naofumi Honda added;
in addition, I added a test case.
I haven't quite worked out how to port the fix yet, but the test cases
can go straight over.
| -rw-r--r-- | Lib/test/test_descr.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py index dd95dde..e667efb 100644 --- a/Lib/test/test_descr.py +++ b/Lib/test/test_descr.py @@ -1748,6 +1748,10 @@ def inherits(): verify((a + 0).__class__ is long) verify((0 + a).__class__ is long) + # Check that negative clones don't segfault + a = longclone(-1) + vereq(a.__dict__, {}) + class precfloat(float): __slots__ = ['prec'] def __init__(self, value=0.0, prec=12): |