New submission from INADA Naoki <songofaca...@gmail.com>: https://github.com/python/cpython/blob/master/Modules/gcmodule.c#L1750-L1763
PyObject_GC_Resize() calls PyObject_REALLOC(), which can change object's address. But it doesn't relinking: g->gc.gc_prev->gc.gc_next = g g->gc.gc_next->gc.gc_prev = g So this API can't be used for tracked object. In CPython code, all callers use this API for non tracked objects. But if some extension module author used this API for tracked objects, it will cause hard to debug behavior. Which should we do? 1. Add relinking to PyObject_GC_Resize() 2. Add note in the document If 1, should we backport it to 3.7 and 3.6? ---------- components: Interpreter Core messages: 317158 nosy: inada.naoki priority: normal severity: normal status: open title: PyObject_GC_Resize() doesn't relink GCHead type: behavior _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33583> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
