diff options
| -rw-r--r-- | Modules/_io/fileio.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Modules/_io/fileio.c b/Modules/_io/fileio.c index dc59455..ba5e096 100644 --- a/Modules/_io/fileio.c +++ b/Modules/_io/fileio.c @@ -564,7 +564,11 @@ new_buffersize(fileio *self, size_t currentsize */ if (end >= SMALLCHUNK && end >= pos && pos >= 0) { /* Add 1 so if the file were to grow we'd notice. */ - return currentsize + end - pos + 1; + Py_off_t bufsize = currentsize + end - pos + 1; + if (bufsize < PY_SSIZE_T_MAX) + return (size_t)bufsize; + else + return PY_SSIZE_T_MAX; } } #endif |