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Bug #41815 Concurrent read/write fails when EOF is reached
Submitted: 2007-06-26 18:56 UTC Modified: 2007-07-12 11:01 UTC
From: mpb dot mail at gmail dot com Assigned:
Status: Closed Package: Streams related
PHP Version: 5.2.3 OS: Linux 2.6
Private report: No CVE-ID: None
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From: mpb dot mail at gmail dot com
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 [2007-06-26 18:56 UTC] mpb dot mail at gmail dot com
If you fread() to the end of a file, and then additional bytes are appended to the file, future calls to fread() never return the appended bytes.

This problem may have started with PHP 5.2.0.
This problem still exists in PHP 5.2.3.

PHP 4.4.7 does NOT suffer from this problem.

Reproduce code:

$f = fopen ('test', 'w');
$g = fopen ('test', 'r');

fwrite ($f, "This is line 1.\n");
fflush ($f);

print fread ($g, 100);

fwrite ($f, "This is line 2.\n");
fflush ($f);

print fread ($g, 100);


Expected result:
This is line 1.
This is line 2.

Actual result:
This is line 1.


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 [2007-07-12 11:01 UTC]
This bug has been fixed in CVS.

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