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Issue #13444: When stdout has been closed explicitly, we should not attempt to flush it at shutdown and print an error.

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This also adds a test for issue #5319, whose resolution introduced the issue.
This commit is contained in:
Antoine Pitrou 2011-11-26 22:02:29 +01:00
commit 5604ef3e36
3 changed files with 40 additions and 2 deletions
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20
Python/pythonrun.c
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@ -348,6 +348,22 @@ extern void dump_counts(FILE*);
/* Flush stdout and stderr */
static int
file_is_closed(PyObject *fobj)
{
int r;
PyObject *tmp = PyObject_GetAttrString(fobj, "closed");
if (tmp == NULL) {
PyErr_Clear();
return 0;
}
r = PyObject_IsTrue(tmp);
Py_DECREF(tmp);
if (r < 0)
PyErr_Clear();
return r > 0;
}
static void
flush_std_files(void)
{
@ -356,7 +372,7 @@ flush_std_files(void)
PyObject *tmp;
_Py_IDENTIFIER(flush);
if (fout != NULL && fout != Py_None) {
if (fout != NULL && fout != Py_None && !file_is_closed(fout)) {
tmp = _PyObject_CallMethodId(fout, &PyId_flush, "");
if (tmp == NULL)
PyErr_WriteUnraisable(fout);
@ -364,7 +380,7 @@ flush_std_files(void)
Py_DECREF(tmp);
}
if (ferr != NULL && ferr != Py_None) {
if (ferr != NULL && ferr != Py_None && !file_is_closed(ferr)) {
tmp = _PyObject_CallMethodId(ferr, &PyId_flush, "");
if (tmp == NULL)
PyErr_Clear();