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Bug #1828 call to ereg crashes apache with a segfault 11.
Submitted: 1999-07-22 09:19 UTC Modified: 1999-07-22 09:31 UTC
From: rasjani at pcuf dot fi Assigned:
Status: Closed Package: Reproducible Crash
PHP Version: 3.0.11 OS: Linux / REdhat 6.0
Private report: No CVE-ID: None
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From: rasjani at pcuf dot fi
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 [1999-07-22 09:19 UTC] rasjani at pcuf dot fi 
This following script is from  php manual and is causing me trouble.  Ive asked help from #php (from efnet & ircnet) and in both places ppl think its a bug.  Here's the script.

<?PHP
	$date = "1999-01-01";
	if ( ereg( "([0-9]{4})-([0-9]{1,2})-([0-9]{1,2})", $date, $regs ) ) {
	    echo "$regs[3].$regs[2].$regs[1]";
	} else {
	    echo "Invalid date format: $date";
	}
?>

This script wasnt the first time i found the bug but ive tested this too and the same things happens. Browser complains about empty document and apache's errlog file gets this message:

[Thu Jul 22 15:59:22 1999] [notice] child pid 16696 exit signal Segmentation fault (11)

Here's info that might help to solve the problem.. 

PHP Version: 3.0.11 (selfcompiled, with following switches)
	--with-apxs=/usr/sbin/apxs --with-pgsql=/usr/include/pgsql --with-system-regex
Apache: 1.3.6 (straight from redhat RPM, not self compiled)
Distro: Linux Redhat 6.0

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 [1999-07-22 09:31 UTC] andrey at cvs dot php dot net 
There is a bug in configure when hsregex and apxs are used.

To fix it,  undo this change:

http://cvs.php.net/cvsweb.cgi/configure.in.diff?r1=1.412&r2=1.413&f=h

and then run autoconf and remake PHP.
 
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