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/Python/Python-ast.c
+++ b/Python/Python-ast.c
@@ -520,6 +520,8 @@ typedef struct {
 static void
 ast_dealloc(AST_object *self)
 {
+    /* bpo-31095: UnTrack is needed before calling any callbacks */
+    PyObject_GC_UnTrack(self);
    Py_CLEAR(self->dict);
    Py_TYPE(self)->tp_free(self);
 }