diff options
Diffstat (limited to 'Lib/shutil.py')
| -rw-r--r-- | Lib/shutil.py | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/Lib/shutil.py b/Lib/shutil.py index f0d0336636..f97de788d9 100644 --- a/Lib/shutil.py +++ b/Lib/shutil.py @@ -135,9 +135,13 @@ def _fastcopy_sendfile(fsrc, fdst): # should not make any difference, also in case the file content # changes while being copied. try: - blocksize = max(os.fstat(infd).st_size, 2 ** 23) # min 8MB - except Exception: - blocksize = 2 ** 27 # 128MB + blocksize = max(os.fstat(infd).st_size, 2 ** 23) # min 8MiB + except OSError: + blocksize = 2 ** 27 # 128MiB + # On 32-bit architectures truncate to 1GiB to avoid OverflowError, + # see bpo-38319. + if sys.maxsize < 2 ** 32: + blocksize = min(blocksize, 2 ** 30) offset = 0 while True: |