Doc #72505 [Opn]: readfile() mangles files larger than 2G
| From: | mueller at search dot ch | Date: | Mon, 27 Jun 2016 12:48:02 +0000 |
| Subject: | Doc #72505 [Opn]: readfile() mangles files larger than 2G | ||
| References: | 1 | Groups: | php.doc.bugs |
| Request: | Send a blank email to doc-bugs+get-13633@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=72505&edit=1
ID: 72505
User updated by: mueller at search dot ch
Reported by: mueller at search dot ch
Summary: readfile() mangles files larger than 2G
Status: Open
Type: Documentation Problem
Package: Filesystem function related
Operating System: SuSE linux
PHP Version: 7.0.8
Block user comment: N
Private report: N
New Comment:
Fixed Bug Type
Previous Comments:
------------------------------------------------------------------------
[2016-06-27 12:41:30] mueller at search dot ch
Description:
------------
when readfile() is used to output a file larger than 2G, the output is not identical with the input.
Test script:
---------------
# output mangled for files larger than 2G
bash:> dd if=largefile of=aa bs=1M count=2049 2>/dev/null; php -r
'readfile("aa");' >bb; crc32 aa bb
b5c09ad4 aa
2e905867 bb
Expected result:
----------------
same crc32 for aa and bb (which is the case if you use count=2047)
Actual result:
--------------
different crc32 for aa and bb
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=72505&edit=1