Bug report

Bug description:

This function is meant to walk the heap and visit all GCable objects. It currently ignores the permanent / frozen generation, which is a problem when calling code expects to get all extant objects.

As a concrete example, the cinder JIT compiler uses this function to scan through all Python functions on the heap and try JIT compiling them. Functions that have been frozen bygc.freeze() orimmortalize_heap() are not processed, and thus do not get compiled.

CPython versions tested on:

3.12

Operating systems tested on:

Linux

Linked PRs

• gh-131740: Update PyUnstable_GC_VisitObjects to traverse perm gen #131744
• [3.13] gh-131740: Update PyUnstable_GC_VisitObjects to traverse perm … #131754
• [3.12] gh-131740: Update PyUnstable_GC_VisitObjects to traverse perm gen #131828
• gh-131740: minor readability fix in PyUnstable_GC_VisitObjects #131786