Issue #25717: Add comment explaining why errors are ignored
diff --git a/Modules/_io/fileio.c b/Modules/_io/fileio.c
index 5f88d58..dbd604a 100644
--- a/Modules/_io/fileio.c
+++ b/Modules/_io/fileio.c
@@ -443,6 +443,9 @@
fstat_result = _Py_fstat_noraise(self->fd, &fdfstat);
Py_END_ALLOW_THREADS
if (fstat_result < 0) {
+ /* Tolerate fstat() errors other than EBADF. See Issue #25717, where
+ an anonymous file on a Virtual Box shared folder filesystem would
+ raise ENOENT. */
#ifdef MS_WINDOWS
if (GetLastError() == ERROR_INVALID_HANDLE) {
PyErr_SetFromWindowsErr(0);