#32160 [Opn]: Copying a file into itself leads to data loss
ID: 32160
Updated by: iliaa@php.net
Reported By: chernyshevsky at hotmail dot com
Status: Open
Bug Type: Filesystem function related
Operating System: *
-PHP Version: 5CVS, 4CVS (2005-06-20)
+PHP Version: 4CVS (2005-06-20)
New Comment:
Fixed in PHP5 CVS, will be applied to 4.X tree after 4.4 release.
Previous Comments:
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[2005-03-30 10:23:01] sniper@php.net
The patch was reverted -> re-opened.
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[2005-03-03 04:32:05] iliaa@php.net
This bug has been fixed in CVS.
Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
Thank you for the report, and for helping us make PHP better.
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[2005-03-02 03:20:26] chernyshevsky at hotmail dot com
Description:
------------
Copying a file into itself causes the source file to be truncate to 0
bytes.
copy("test", "test"); // test.txt -> 0
You can't avoid this problem just by comparing the filenames, since one
could be a symlink pointing to the other. The following would destroy
test1 if test2 is a link to test1:
copy("test1", "test2");
Reproduce code:
---------------
copy("test", "test");
Expected result:
----------------
Nothing happens or a file open error.
Actual result:
--------------
Contents in source file is lost.
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Thread (7 messages)