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bpo-36829: sys.excepthook and sys.unraisablehook flush (GH-13620)

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sys.excepthook() and sys.unraisablehook() now explicitly flush the
file (usually sys.stderr).

If file.flush() fails, sys.excepthook() silently ignores the error,
whereas sys.unraisablehook() logs the new exception.
This commit is contained in:
Victor Stinner 2019-05-28 16:01:17 +02:00 • committed by GitHub
parent 51ddab8dae
commit a85a1d337d
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2 changed files with 19 additions and 0 deletions
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9
Python/errors.c
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@ -26,6 +26,7 @@ extern "C" {
_Py_IDENTIFIER(builtins);
_Py_IDENTIFIER(stderr);
_Py_IDENTIFIER(flush);
/* Forward declarations */
@ -1254,6 +1255,14 @@ write_unraisable_exc_file(PyThreadState *tstate, PyObject *exc_type,
if (PyFile_WriteString("\n", file) < 0) {
return -1;
}
/* Explicitly call file.flush() */
PyObject *res = _PyObject_CallMethodId(file, &PyId_flush, NULL);
if (!res) {
return -1;
}
Py_DECREF(res);
return 0;
}