Bug report

Bug description:

Parent: #146121

https://gist.github.com/devdanzin/60b787bfa22651ba6a18aef3b6e1439d/raw/5b12fb962510aed36b457ae3670424bbb91ecacd/marshal_type_code_leak.md

In r_object TYPE_CODE case (line 1601-1602), when firstlineno == -1 && PyErr_Occurred(), code does break instead of goto code_error. Skips cleanup of 8 owned refs. Reachable via marshal.loads() with crafted input.

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

Linked PRs

• gh-148418: Fix a possible reference leak in a corrupted TYPE_CODE marshal stream #148419
• [3.14] gh-148418: Fix a possible reference leak in a corrupted TYPE_CODE marshal stream (GH-148419) #149363
• [3.13] gh-148418: Fix a possible reference leak in a corrupted TYPE_CODE marshal stream (GH-148419) #149364