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Bug #21098 mktime crashes when certain parameters are passed
Submitted: 2002-12-19 09:57 UTC Modified: 2002-12-19 11:07 UTC
From: martin at tack dot se Assigned:
Status: Closed Package: Reproducible crash
PHP Version: 4.3.0RC3 OS: Windows 2000
Private report: No CVE-ID: None
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From: martin at tack dot se
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 [2002-12-19 09:57 UTC] martin at tack dot se 
The following code makes apache (?) crash.
<?
$timestamp = 0;
$m = date("m",$timestamp); //$m = 01
$y = date("Y",$timestamp); //$m = 1970
$datestamp = mktime(0,0,0, $m, 0, $y);
?>

I use Apache 2.0.43 under Windows2k SP3.
I have tested against PHP 4.2.3, 4.3.0RC3 and a couple of 4.3.x-dev snapshots from snaps.php.net (from 16-18 dec 2002)
Script doesnt crash if either $m or $y is replaced with a 0 in the mktime() call.

I found this problem after investigating why a certain script crashed, the reason was some data that i've expected to be in the database actually wasn't. In this case i'd expect to get a false back in $datestamp, or some kind of error message.
I've searched the bug database but havent found any similar bug reports.

On Linux 2.4.14, PHP 4.2.3, Apache 1.3.27 i can NOT reproduce this problem.

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 [2002-12-19 10:04 UTC] martin at tack dot se 
Last tested with php4-win32-STABLE-200212190930.zip
and the bug still occurs.
Also, Apache says the following in error.log:

[Thu Dec 19 17:02:56 2002] [notice] Parent: child process exited with status 3221225477 -- Restarting.
[Thu Dec 19 17:02:56 2002] [notice] Parent: Created child process 2232
[Thu Dec 19 17:02:56 2002] [notice] Child 2232: Child process is running
[Thu Dec 19 17:02:56 2002] [notice] Child 2232: Acquired the start mutex.
[Thu Dec 19 17:02:56 2002] [notice] Child 2232: Starting 250 worker threads.
 [2002-12-19 10:12 UTC] edink@php.net 
Verified on Windows. Crash happens in ext/standard/datetime.c in php_mktime() on line:

t2 = *localtime(&seconds);
 [2002-12-19 11:07 UTC] iliaa@php.net 
This bug has been fixed in CVS.

In case this was a PHP problem, 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/.
 
In case this was a documentation problem, the fix will show up soon at
http://www.php.net/manual/.

In case this was a PHP.net website problem, the change will show
up on the PHP.net site and on the mirror sites in short time.
 
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