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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 21:59:36 +01:00
parent fb36b3f6a0
commit d7c8fbf89e
3 changed files with 40 additions and 2 deletions
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20
Python/pythonrun.c
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@ -332,6 +332,22 @@ 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)
{
@ -339,7 +355,7 @@ flush_std_files(void)
PyObject *ferr = PySys_GetObject("stderr");
PyObject *tmp;
if (fout != NULL && fout != Py_None) {
if (fout != NULL && fout != Py_None && !file_is_closed(fout)) {
tmp = PyObject_CallMethod(fout, "flush", "");
if (tmp == NULL)
PyErr_WriteUnraisable(fout);
@ -347,7 +363,7 @@ 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_CallMethod(ferr, "flush", "");
if (tmp == NULL)
PyErr_Clear();