Mercurial > cpython-lru_cache-weakref
diff Modules/arraymodule.c @ 55124:7bb7758e6d64
Add the fix for issue 4509 to the mapping methods.
| author | Alexandre Vassalotti <alexandre@peadrop.com> |
|---|---|
| date | Sun, 05 Jul 2009 19:57:00 +0000 |
| parents | a76b34cfc897 |
| children | 67f5e01d5a6a |
line wrap: on
line diff
--- a/Modules/arraymodule.c Sun Jul 05 10:03:49 2009 +0000 +++ b/Modules/arraymodule.c Sun Jul 05 19:57:00 2009 +0000 @@ -1699,6 +1699,16 @@ if ((step > 0 && stop < start) || (step < 0 && stop > start)) stop = start; + + /* Issue #4509: If the array has exported buffers and the slice + assignment would change the size of the array, fail early to make + sure we don't modify it. */ + if ((needed == 0 || slicelength != needed) && self->ob_exports > 0) { + PyErr_SetString(PyExc_BufferError, + "cannot resize an array that is exporting buffers"); + return -1; + } + if (step == 1) { if (slicelength > needed) { memmove(self->ob_item + (start + needed) * itemsize,