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gh-121058: Warn if `PyThreadState_Clear` is called with an exception set (gh-121343)

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Peter Bierma 2024-11-20 12:27:19 -05:00 committed by GitHub
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Misc/NEWS.d/next/C API/2024-07-03-13-39-13.gh-issue-121058.MKi1MV.rst Normal file
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@ -0,0 +1,2 @@
``PyThreadState_Clear()`` now warns (and calls ``sys.excepthook``) if the
thread state still has an active exception.

5
Python/pystate.c
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@ -1649,6 +1649,11 @@ PyThreadState_Clear(PyThreadState *tstate)
"PyThreadState_Clear: warning: thread still has a frame\n"); "PyThreadState_Clear: warning: thread still has a frame\n");
} }
if (verbose && tstate->current_exception != NULL) {
fprintf(stderr, "PyThreadState_Clear: warning: thread has an exception set\n");
_PyErr_Print(tstate);
}
/* At this point tstate shouldn't be used any more, /* At this point tstate shouldn't be used any more,
neither to run Python code nor for other uses. neither to run Python code nor for other uses.