bpo-31095: fix potential crash during GC (GH-2974)

2017-08-24 14:55:17 +09:00
parent bf9075a0c5
commit a6296d34a4
14 changed files with 60 additions and 13 deletions
--- a/Modules/_struct.c
+++ b/Modules/_struct.c
@@ -1589,6 +1589,8 @@ typedef struct {
 static void
 unpackiter_dealloc(unpackiterobject *self)
 {
+    /* bpo-31095: UnTrack is needed before calling any callbacks */
+    PyObject_GC_UnTrack(self);
    Py_XDECREF(self->so);
    PyBuffer_Release(&self->buf);
    PyObject_GC_Del(self);