<?php
$data = array ("Line 1",
"Line 10");
foreach ($data as $subject)
{
$temp = "";
$temp = stripslashes ($subject);
$line = "$temp";
}
?>

The following script causes a seg fault on the second loop iteration.

<?php
$data = array ("Line 1",
"Line 10");
foreach ($data as $subject)
{
$temp = "";
$temp = stripslashes ($subject);
$line = "$temp";
}
?>

Changing any element of the script will make it work properly.

I'm running Mandrake 8.1 on a Gateway E3400, Gateway E-3100, and Dell 2400.

This script segfaults on all of them when using PHP 4.2.2. If I use PHP 4.2.1, everything is fine. It makes no difference whether I'm running a standalone PHP or using Apache 1.3.26. The results are the same.

I use the same PHP.INI file for both versions (I don't replace/change it).

Module information is as follows:

#
# Run 1st time to create apache dynamic module.
# Remove the following if you don't use SSL:
# CPPFLAGS=
#
#cd $HOMEDIR
#tar -xvzf $PHP.tar.gz
#rm -rf $SRC_DIR/$PHP
#mv $PHP $SRC_DIR
#cd $SRC_DIR/$PHP
#CPPFLAGS=-DEAPI \
#./configure  --enable-shared \
#             --enable-track-vars \
#             --enable-versioning \
#             --with-apxs=$APACHEDIR/bin/apxs \
#             --with-config-file-path=/usr/local/lib \
#             --with-mysql \
#             --with-pgsql \
#             --with-sybase=/usr/local/$FREETDS \
#             --with-pdflib=/usr/local \
#             --with-zlib-dir=/usr
#make
#$APACHEDIR/bin/apachectl stop
#make install
#$APACHEDIR/bin/apachectl start
#
# Run 2nd time to create standalone executable.
# The difference between this and the 1st time
# is the CPPFLAGS and --with-apxs, and graphics
# modules to play with.
#
#cd $HOMEDIR
#tar -xvzf $PHP.tar.gz
#rm -rf $SRC_DIR/$PHP
#mv $PHP $SRC_DIR
#cd $SRC_DIR/$PHP
#./configure  --enable-calendar \
#             --enable-dbase \
#             --enable-force-cgi-redirect \
#             --enable-ftp \
#             --with-gd \
#             --with-jpeg-dir=/usr/lib \
#             --enable-shared \
#             --enable-track-vars \
#             --enable-versioning \
#             --with-config-file-path=/usr/local/lib \
#             --with-mysql \
#             --with-pgsql \
#             --with-png-dir=/usr/lib \
#             --with-sybase=/usr/local/$FREETDS \
#             --with-zlib-dir=/usr/lib
#make
#make install

The core dump gives me the following information:

(gdb) bt
#0  0x401dc1da in free () from /lib/libc.so.6
#1  0x401dbf44 in free () from /lib/libc.so.6
#2  0x080f5c43 in shutdown_memory_manager (silent=0, clean_cache=0) at zend_alloc.c:468
#3  0x08066a3a in php_request_shutdown (dummy=0x0) at main.c:794
#4  0x080657cf in main (argc=2, argv=0xbffff7c4) at cgi_main.c:827
#5  0x401775b0 in __libc_start_main () from /lib/libc.so.6
(gdb)

Re-Compiling with --enable-debug results in no core file, and this message:

[Thu Aug  8 12:03:33 2002]  Script:  'test.php'
---------------------------------------
./zend_execute.c(445) : Block 0x082061A8 status:
zend_variables.c(44) : Actual location (location was relayed)
Beginning:      OK (allocated on string.c:2262, 7 bytes)
      End:      Overflown (magic=0x2A8FCC00 instead of 0x2A8FCC84)
                1 byte(s) overflown
---------------------------------------
Content-type: text/html


[Thu Aug  8 12:03:33 2002]  Script:  'test.php'
---------------------------------------
zend_execute_API.c(274) : Block 0x08206708 status:
zend_variables.c(44) : Actual location (location was relayed)
Beginning:      OK (allocated on string.c:2262, 8 bytes)
      End:      Overflown (magic=0x2A8FCC00 instead of 0x2A8FCC84)
                1 byte(s) overflown
---------------------------------------
string.c(2262) :  Freeing 0x0820672C (8 bytes), script=test.php
Last leak repeated 1 time

[EOM]