From: pollmer at uni-sw dot gwdg dot de
Operating system: SuSE Linux 9.0
PHP version: 5CVS-2004-01-06 (dev)
PHP Bug Type: Reproducible crash
Bug description: Segmentation fault
Description:
------------
Segmentation fault happens by running the script via command line and via
apache 1.3.29.
Same behaviour using PHP 5.0.0b3 or 5.0.0b2.
./configure --prefix=/usr/local/php5
--with-apxs=/usr/local/apache/bin/apxs --enable-debug --enable-safe-mode
--with-openssl=/usr --enable-bcmath --enable-calendar
--with-libxml-dir=/usr/include/libxml2 --with-mysql=/usr --with-pgsql=/usr
--enable-trans-id
(gdb) bt
#0 0x08212096 in zend_pzval_unlock_func (z=0x1)
at /usr/local/src/php5-200401061430/Zend/zend_execute.c:64
#1 0x082125b6 in zend_switch_free (opline=0x404b72b8, Ts=0xbfffcea0)
at /usr/local/src/php5-200401061430/Zend/zend_execute.c:202
#2 0x0820e6aa in zend_switch_free_handler (execute_data=0xbfffd000,
op_array=0x404b6628)
at /usr/local/src/php5-200401061430/Zend/zend_execute.c:3093
#3 0x08208fb2 in execute (op_array=0x404b6628)
at /usr/local/src/php5-200401061430/Zend/zend_execute.c:1264
#4 0x081e7770 in zend_execute_scripts (type=8, retval=0x0, file_count=3)
at /usr/local/src/php5-200401061430/Zend/zend.c:1050
#5 0x081a2ed5 in php_execute_script (primary_file=0xbffff400)
at /usr/local/src/php5-200401061430/main/main.c:1642
#6 0x082165f4 in main (argc=2, argv=0xbffff494)
at /usr/local/src/php5-200401061430/sapi/cli/php_cli.c:925
Reproduce code:
---------------
$string = "ab";
$strl = strlen( $string );
for ( $i =0; $i < $strl; $i++ ) {
switch( $string[$i] ) {
case 'a':
echo 'a ';
break;
case 'b':
echo 'b ';
break;
}
}
Expected result:
----------------
The output of the script should be:
a b
Actual result:
--------------
The output of the script is:
a Segmentation fault
You'll get the output you want, if you use the script:
$string = "ab";
$strl = strlen( $string );
for ( $i =0; $i < $strl; $i++ ) {
$string_i = $string[$i];
switch( $string_i ) {
case 'a':
echo 'a ';
break;
case 'b':
echo 'b ';
break;
}
}
--
Edit bug report at http://bugs.php.net/?id=26816&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=26816&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=26816&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=26816&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=26816&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=26816&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=26816&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=26816&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=26816&r=support
Expected behavior: http://bugs.php.net/fix.php?id=26816&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=26816&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=26816&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=26816&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=26816&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=26816&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=26816&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=26816&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=26816&r=float
