Issue #23152: Implement _Py_fstat() to support files larger than 2 GB on Windows.

fstat() may fail with EOVERFLOW on files larger than 2 GB because the file size type is an signed 32-bit integer.

1 files changed, 3 insertions, 3 deletions

diff --git a/Python/random.c b/Python/random.c
index 93d300dae4..031d8875c9 100644
--- a/Python/random.c
+++ b/Python/random.c
@@ -139,14 +139,14 @@ dev_urandom_python(char *buffer, Py_ssize_t size)
 {
     int fd;
     Py_ssize_t n;
-    struct stat st;
+    struct _Py_stat_struct st;
 
     if (size <= 0)
         return 0;
 
     if (urandom_cache.fd >= 0) {
         /* Does the fd point to the same thing as before? (issue #21207) */
-        if (fstat(urandom_cache.fd, &st)
+        if (_Py_fstat(urandom_cache.fd, &st)
             || st.st_dev != urandom_cache.st_dev
             || st.st_ino != urandom_cache.st_ino) {
             /* Something changed: forget the cached fd (but don't close it,
@@ -178,7 +178,7 @@ dev_urandom_python(char *buffer, Py_ssize_t size)
             fd = urandom_cache.fd;
         }
         else {
-            if (fstat(fd, &st)) {
+            if (_Py_fstat(fd, &st)) {
                 PyErr_SetFromErrno(PyExc_OSError);
                 close(fd);
                 return -1;