Stefan Krah <stefan-use...@bytereef.org> added the comment: Pauli Virtanen <rep...@bugs.python.org> wrote: > Comment on the patch: it seems you do not track the re-export count in > memory_getbuf: > > a = memoryview(obj) > b = numpy.asarray(a) > a.release() > b[0] = 123 # <-- BOOM: the buffer was already released
Could you give the exact sequence of events (including the creation of obj)? For me this works: Python 3.3a0 (memoryview:bbe70ca4e0e5+, Jul 4 2011, 13:55:55) [GCC 4.4.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import numpy >>> obj = bytearray(b'123456789') >>> a = memoryview(obj) >>> b = numpy.asarray(a) >>> a.release() Traceback (most recent call last): File "<stdin>", line 1, in <module> BufferError: several memoryviews are active >>> b[0] = 123 >>> b array([123, 50, 51, 52, 53, 54, 55, 56, 57], dtype=uint8) >>> del a >>> b[0] = 224 >>> b array([224, 50, 51, 52, 53, 54, 55, 56, 57], dtype=uint8) > (I had some code for n-dim slicing etc. in my first patch that could be > useful to have too; I'll see if I find time to dig them out here.) That would be nice. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue10181> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
