New submission from Oren Milman: at least on my Windows, the following code:
import sys sys.modules = [] - when run interactively, causes weird behavior, e.g. exit() doesn't exit the interpreter, and print() doesn't print. then, pressing Ctrl+C causes 'Assertion failed: !PyErr_Occurred(), file ..\Objects\call.c, line 803' - when run as a script, causes PyImport_Cleanup() to raise a negative ref count Fatal Python error. (this is because PyImport_Cleanup() (in Python/import.c) assumes that PyImport_GetModuleDict() returned a dict.) IIUC, this bug was introduced in https://github.com/python/cpython/pull/1638 (which resolved #28411). ---------- components: Interpreter Core messages: 301783 nosy: Oren Milman priority: normal severity: normal status: open title: undefined behavior and crashes in case of a bad sys.modules type: crash versions: Python 3.7 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue31404> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
