On Mon, Mar 3, 2014 at 8:38 AM, Stefan Behnel <stefan...@behnel.de> wrote: > Hi, > > I was made aware of crashes in the last lxml release, which turned out to > be due to the use of freelists for types that could be subtyped from Python > code. I was able to work around them in lxml, however, the real problem is > in Cython. There was supposed to be a safe guard for that case in the > freelist code based on the object struct size, which increases for subtypes > that have a __dict__. However, if the Python subtype uses an empty > __slots__ declaration, the object struct size will not increase, thus > passing the guard. > > The correct fix is to also test if the type being instantiated lives on the > heap and exclude it from the freelist if so. > > https://github.com/cython/cython/commit/d2aff824dd0900982a420ebaaa1dac6120a9d72e > > This, together with the buffer/memory view related bugs I fixed since the > last release, suggest (at least to me) that we shouldn't wait all too long > with the next bug fix release.
Sounds good to me. Did you want to get the process rolling, or should I? > From my POV, all changes in current master are safe enough to go out. > > Stefan > _______________________________________________ > cython-devel mailing list > cython-devel@python.org > https://mail.python.org/mailman/listinfo/cython-devel _______________________________________________ cython-devel mailing list cython-devel@python.org https://mail.python.org/mailman/listinfo/cython-devel
