diff options
| -rw-r--r-- | Modules/gcmodule.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/Modules/gcmodule.c b/Modules/gcmodule.c index 9750d2a..1307aa3 100644 --- a/Modules/gcmodule.c +++ b/Modules/gcmodule.c @@ -468,13 +468,16 @@ visit_reachable(PyObject *op, PyGC_Head *reachable) PyGC_Head *gc = AS_GC(op); const Py_ssize_t gc_refs = gc_get_refs(gc); - // Ignore untracked objects and objects in other generation. + // Ignore objects in other generation. // This also skips objects "to the left" of the current position in // move_unreachable's scan of the 'young' list - they've already been // traversed, and no longer have the PREV_MASK_COLLECTING flag. - if (gc->_gc_next == 0 || !gc_is_collecting(gc)) { + if (! gc_is_collecting(gc)) { return 0; } + // It would be a logic error elsewhere if the collecting flag were set on + // an untracked object. + assert(gc->_gc_next != 0); if (gc->_gc_next & NEXT_MASK_UNREACHABLE) { /* This had gc_refs = 0 when move_unreachable got |