bpo-1054041: Re-init _Py_UnhandledKeyboardInterrupt before run. #11963
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Explicitly reinitialize this every eval *just in case* someone is calling into an embedded Python where they don't care about an uncaught KeyboardInterrupt exception (why didn't they leave `config.install_signal_handlers` set to `0`?!?) but then later call `Py_Main()` itself (which *checks* this flag and dies with a signal after its interpreter exits). We don't want a previous embedded interpreter's uncaught exception to trigger an unexplained signal exit from a future `Py_Main()` based one.
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FWIW, another reason to do this is so changes to what bits of code check for the _Py_UnhandledKeyboardInterrupt variable (e.g. if it was moved to Py_Finalize) don't cause unintended behaviour changes in embedded Python interpreters. |
Yhg1s
approved these changes
Feb 21, 2019
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Explicitly reinitialize this every eval just in case someone is
calling into an embedded Python where they don't care about an uncaught
KeyboardInterrupt exception (why didn't they leave
config.install_signal_handlersset to0?!?) but then later callPy_Main()itself (which checks this flag and dies with a signal afterits interpreter exits). We don't want a previous embedded interpreter's
uncaught exception to trigger an unexplained signal exit from a future
Py_Main()based one.https://bugs.python.org/issue1054041
aka #41078