Description:
------------
When glob is called on a directory that has 511,145 files it segfaults.

Reproduce code:
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<?php glob('*'); ?>

Expected result:
----------------
work or fail, but not crash.

Actual result:
--------------
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This GDB was configured as "i386-redhat-linux-gnu"...Using host libthread_db library "/lib/libthread_db.so.1".

(gdb) run test.php
Starting program: /tmp/php-5.1.4/sapi/cli/php test.php
Reading symbols from shared object read from target memory...done.
Loaded system supplied DSO at 0xbcb000
[Thread debugging using libthread_db enabled]
[New Thread -1209100608 (LWP 28065)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1209100608 (LWP 28065)]
0x00c7fa4c in internal_fnwmatch () from /lib/libc.so.6
(gdb) bt
#0  0x00c7fa4c in internal_fnwmatch () from /lib/libc.so.6
#1  0x00c814ef in fnmatch@GLIBC_2.0 () from /lib/libc.so.6
#2  0x00c7917b in glob_in_dir () from /lib/libc.so.6
#3  0x00c79fdc in glob () from /lib/libc.so.6
#4  0x0814ceb4 in zif_glob (ht=1, return_value=0x98ab1e4, return_value_ptr=0x0, this_ptr=0x0, return_value_used=0)
    at /tmp/php-5.1.4/ext/standard/dir.c:398
#5  0x081ec289 in zend_do_fcall_common_helper_SPEC (execute_data=0xbfb026e0) at /tmp/php-5.1.4/Zend/zend_vm_execute.h:200
#6  0x081eba2d in execute (op_array=0x98aba44) at /tmp/php-5.1.4/Zend/zend_vm_execute.h:92
#7  0x081d5a5b in zend_execute_scripts (type=8, retval=Variable "retval" is not available.
) at /tmp/php-5.1.4/Zend/zend.c:1109
#8  0x081a1bb6 in php_execute_script (primary_file=0xbfb04b04) at /tmp/php-5.1.4/main/main.c:1732
#9  0x0824e8dd in main (argc=2, argv=0xbfb04c44) at /tmp/php-5.1.4/sapi/cli/php_cli.c:1092