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Bug #46331 Fileinfo does not look for /usr/share/magic{.*} and coredumps
Submitted: 2008-10-17 14:57 UTC Modified: 2009-03-17 02:50 UTC
From: Bjorn dot Wiberg at its dot uu dot se Assigned: scottmac (profile)
Status: Closed Package: Filesystem function related
PHP Version: 5.3CVS-2008-11-11 OS: * (big-endian only)
Private report: No CVE-ID: None
 [2008-10-17 14:57 UTC] Bjorn dot Wiberg at its dot uu dot se
Description:
------------
The (5.3dev200810170630) bundled Fileinfo extension does not look for /usr/share/misc/magic{.*} as suggested by http://se.php.net/manual/en/function.finfo-open.php.

Setting the environment variable MAGIC works, however.
So does specifying the full path to to magic file in the call to finfo_open().

When it fails to find the magic file, PHP core dumps.

Reproduce code:
---------------
php -d extension_dir=/apache/php/lib/php/extensions/debug-non-zts-20071006 -r '$finfo=finfo_open(FILEINFO_MIME);'

Also see "Actual result" below, which illustrates all this.

Expected result:
----------------
No coredump,

Actual result:
--------------
root@musica-lp03:/# /nynom/apache/php/bin/php -d extension_dir=/nynom/apache/php/lib/php/extensions/debug-non-zts-20071006  -r '$finfo=finfo_open(FILEINFO_MIME);'
Segmentation fault (core dumped)

root@musica-lp03:/# gdb /nynom/apache/php/bin/php ./core
GNU gdb 6.0
Copyright 2003 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "powerpc-ibm-aix5.1.0.0"...
Core was generated by `php'.
Program terminated with signal 11, Segmentation fault.
#0  0x107ca694 in bs1 (Illegal instruction (core dumped)

root@musica-lp03:/# /nynom/apache/php/bin/php -d extension_dir=/nynom/apache/php/lib/php/extensions/debug-non-zts-20071006  -r '$finfo=finfo_open(FILEINFO_MIME, "/usr/local/share/file/magic");'

(OK)

root@musica-lp03:/# export MAGIC=/usr/local/share/file/magic
root@musica-lp03:/# /nynom/apache/php/bin/php -d extension_dir=/nynom/apache/php/lib/php/extensions/debug-non-zts-20071006  -r '$finfo=finfo_open(FILEINFO_MIME);'
root@musica-lp03:/# 

(OK)

root@musica-lp03:/# cd /usr/share/
root@musica-lp03:/usr/share# mkdir misc
root@musica-lp03:/usr/share# cd misc/
root@musica-lp03:/usr/share/misc# ln -s /usr/local/share/file/magic* .
root@musica-lp03:/usr/share/misc# ls -l
total 0
lrwxrwxrwx  1 root system 27 2008-10-17 16:52 magic -> /usr/local/share/file/magic
lrwxrwxrwx  1 root system 31 2008-10-17 16:52 magic.mgc -> /usr/local/share/file/magic.mgc
lrwxrwxrwx  1 root system 32 2008-10-17 16:52 magic.mime -> /usr/local/share/file/magic.mime
lrwxrwxrwx  1 root system 36 2008-10-17 16:52 magic.mime.mgc -> /usr/local/share/file/magic.mime.mgc
root@musica-lp03:/usr/share/misc# cd
root@musica-lp03:/# /nynom/apache/php/bin/php -d extension_dir=/nynom/apache/php/lib/php/extensions/debug-non-zts-20071006  -r '$finfo=finfo_open(FILEINFO_MIME);'
root@musica-lp03:/# unset MAGIC
root@musica-lp03:/# export MAGIC
root@musica-lp03:/# /nynom/apache/php/bin/php -d extension_dir=/nynom/apache/php/lib/php/extensions/debug-non-zts-20071006  -r '$finfo=finfo_open(FILEINFO_MIME);'
Segmentation fault (core dumped)

Fileinfo information from phpinfo():
fileinfo
fileinfo support	enabled
version 	1.0.5-dev

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 [2008-10-18 18:19 UTC] scottmac@php.net
Any chance of a full backtrace?

bt full

I can't reproduce this on OS X or CentOS.
 [2008-10-20 06:00 UTC] Bjorn dot Wiberg at its dot uu dot se
bwiberg@musica-lp03:~$ gdb /apache/php/bin/php
GNU gdb 6.0
Copyright 2003 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "powerpc-ibm-aix5.1.0.0"...
(gdb) set args -d extension_dir=/apache/php/lib/php/extensions/debug-non-zts-20071006 -r '$finfo=finfo_open(FILEINFO_MIME);'
(gdb) run
Starting program: /apache/php/bin/php -d extension_dir=/apache/php/lib/php/extensions/debug-non-zts-20071006 -r '$finfo=finfo_open(FILEINFO_MIME);'

Program received signal SIGSEGV, Segmentation fault.
0x107ca694 in bs1 (m=0x10ad4340) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c:2106
2106    /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c: No such file or directory.
        in /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c
(gdb) bt full
#0  0x107ca694 in bs1 (m=0x10ad4340) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c:2106
No locals.
#1  0x107ca398 in byteswap (magic=0x10ad4340, nmagic=8476) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c:2036
        i = 0
#2  0x107c9f10 in apprentice_map (ms=0x200d2470, magicp=0x2ff21d64, nmagicp=0x2ff21d68, fn=0x0) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c:1928
        ptr = (uint32_t *) 0x10ad4280
        version = 5
        needsbyteswap = 1
        dbname = 0x0
        mm = (void *) 0x10ad4280
        ret = 3
        stream = (php_stream *) 0x2ff21ca8
        st = {sb = {st_dev = 4100, st_ino = 13, st_mode = 804396200, st_nlink = 12274, st_flag = 7480, st_uid = 804396208, st_gid = 268550332, st_rdev = 804396236, st_size = 537732304, st_atime = 4368, 
    st_atime_n = 537665048, st_mtime = 537732576, st_mtime_n = 0, st_ctime = 2, st_ctime_n = 804396280, st_blksize = 512, st_blocks = 0, st_vfstype = 24, st_vfs = 537732572, st_type = 4100, st_gen = 64, 
    st_reserved = {537732576, 537732308, 0, 537732308, 537665560, 0, 5, 0, 804396304}}}
#3  0x107c4a18 in apprentice_1 (ms=0x200d2470, fn=0x0, action=0, mlist=0x200d25c8) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c:253
        magic = (struct magic *) 0x10ad4340
        nmagic = 8476
        ml = (struct mlist *) 0x0
        rv = -1
        mapped = 279784544
#4  0x107c4d1c in file_apprentice (ms=0x200d2470, fn=0x0, action=0) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c:320
        p = 0x0
        mfn = 0x77 ""
        file_err = 279783108
        errs = -1
        mlist = (struct mlist *) 0x200d25c8
#5  0x107c38f8 in magic_load (ms=0x200d2470, magicfile=0x0) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/magic.c:192
        ml = (struct mlist *) 0x200d2470
#6  0x107c1c80 in zif_finfo_open (ht=1, return_value=0x200d18a4, return_value_ptr=0x0, this_ptr=0x0, return_value_used=1) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/fileinfo.c:349
        options = 1040
        file = 0x0
        file_len = 0
        finfo = (struct php_fileinfo *) 0x200d243c
        object = (zval *) 0x0
        resolved_path = "\000\000\000\b \tUp\000\000\000\000/�036\230/�036�\r\n�\r\n�000\000\000\000 \r\n�\f ,\000\000\000\000\000\003\024X\000\000\000\022/�036��037P/�036�020\001�/�036�\f�\000\000\000\001\000\000\000\000\000\000\000\000 \f�\f \004\000\000\000\a\000\000\000� \000\000�/�036��037P\000\003\024X\020\001� \r\v�6v\020 \tUp \f\036\030 \f�000\000\000\001\020\205�\000\000\001�\000\000\000\000/�037P\000\003\024X/�037X\000\000\001, \r\n�000\000\000�\000\000\000\022\000\000\000\000\000\000\000\022/�037P"...
        obj = (struct finfo_object *) 0x2ff21e98
#7  0x100a73d0 in zend_do_fcall_common_helper_SPEC (execute_data=0x202fb9f8) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/Zend/zend_vm_execute.h:315
        opline = (zend_op *) 0x200d232c
        should_change_scope = 0 '\0'
#8  0x100af058 in ZEND_DO_FCALL_SPEC_CONST_HANDLER (execute_data=0x202fb9f8) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/Zend/zend_vm_execute.h:1574
        opline = (zend_op *) 0x200d232c
        fname = (zval *) 0x200d2348
#9  0x100a613c in execute (op_array=0x200d1f50) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/Zend/zend_vm_execute.h:65
        ret = 0
        execute_data = (zend_execute_data *) 0x202fb9f8
        nested = 1 '\001'
        original_in_execution = 0 '\0'
#10 0x1003d0b8 in zend_eval_string (str=0x2ff228fe "$finfo=finfo_op\en(FILEINFO_MIME);", retval_ptr=0x0, string_name=0x1085b7b8 "Command lin\e cod\e")
    at /home/bwiberg/rpm/BUILD/php5.3-200810170630/Zend/zend_execute_API.c:1111
        local_retval_ptr = (zval *) 0x0
        original_return_value_ptr_ptr = (zval **) 0x0
        original_opline_ptr = (zend_op **) 0x0
        pv = {value = {lval = 804399358, dval = 9.8021191754315175e-78, str = {val = 0x2ff228fe "$finfo=finfo_op\en(FILEINFO_MIME);", len = 33}, ht = 0x2ff228fe, obj = {handle = 804399358, handlers = 0x21}}, 
  refcount__gc = 1, type = 6 '\006', is_ref__gc = 47 '/'}
        new_op_array = (zend_op_array *) 0x200d1f50
        original_active_op_array = (zend_op_array *) 0x0
        original_compiler_options = 2
        retval = 537729252
        l = 537729316
#11 0x1003d2f8 in zend_eval_string_ex (str=0x2ff228fe "$finfo=finfo_op\en(FILEINFO_MIME);", retval_ptr=0x0, string_name=0x1085b7b8 "Command lin\e cod\e", handle_exceptions=1)
    at /home/bwiberg/rpm/BUILD/php5.3-200810170630/Zend/zend_execute_API.c:1146
        result = 0
#12 0x1000310c in main (argc=5, argv=0x2ff227f8) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/sapi/cli/php_cli.c:1169
        __orig_bailout = (sigjmp_buf *) 0x0
        __bailout = {-1, -1, 268444612, 804398272, 537482608, -559038737, 5, 804399096, 804399120, 0, -559038737, -559038737, -559038737, -559038737, -559038737, -559038737, -559038737, -559038737, -559038737, 
  11, 536871100, 268435456, -26, 804398272, 673464868, 0 <repeats 37 times>, 804399120, 0}
        exit_status = 0
        c = -1
---Type <return> to continue, or q <return> to quit---
        file_handle = {type = ZEND_HANDLE_FP, filename = 0x1085b760 "-", opened_path = 0x0, handle = {fd = -264674272, fp = 0xf0396420, stream = {handle = 0xf0396420, isatty = 0, mmap = {len = 0, pos = 0, 
        map = 0x0, buf = 0x0, old_handle = 0x0, old_closer = 0}, reader = 0, fsizer = 0, closer = 0}}, free_filename = 0 '\0'}
        behavior = 6
        reflection_what = 0x0
        orig_optind = 1
        orig_optarg = 0x0
        arg_free = 0x2ff228fe "$finfo=finfo_op\en(FILEINFO_MIME);"
        arg_excp = (char **) 0x2ff22808
        script_file = 0x0
        interactive = 0
        module_started = 1
        request_started = 1
        lineno = 0
        exec_direct = 0x2ff228fe "$finfo=finfo_op\en(FILEINFO_MIME);"
        exec_run = 0x0
        exec_begin = 0x0
        exec_end = 0x0
        param_error = 0x0
        hide_argv = 0
        ini_entries_len = 180
        len = 67
        val = 0x2ff228c5 "/apach\e/php/lib/php/\ext\ensions/d\ebug-non-zts-20071006"
(gdb) p *m
$1 = {cont_level = 0, flag = 32 ' ', dummy1 = 0 '\0', reln = 61 '=', vallen = 31 '\037', type = 5 '\005', in_type = 0 '\0', in_op = 0 '\0', mask_op = 0 '\0', cond = 0 '\0', dummy2 = 0 '\0', offset = 0, 
  in_offset = 0, lineno = 553648128, _u = {_mask = 0, _s = {_count = 0, _flags = 0}}, value = {b = 67 'C', h = 17206, l = 1127625760, q = 4843115763279687781, hs = "C6", hl = "C64 ", hq = "C64 tap\e", 
    s = "C64 tap\e imag\e fil\e", '\0' <repeats 12 times>, f = 182.203613, d = 6249763483775077}, desc = "T64 tap\e Imag\e", '\0' <repeats 49 times>, mimetype = '\0' <repeats 63 times>}
(gdb) c
Continuing.

Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.
(gdb) quit
bwiberg@musica-lp03:~$ 

Perhaps it doesn't like my magic files from my file 4.21 package?

"This is Release 4.x of Ian Darwin's (copyright but distributable)
file(1) command. This version is the standard "file" command for Linux, *BSD, and other systems.

The major feature of 4.x is the refactoring of the code into a library, and the re-write of the file command in terms of that library. The library itself, libmagic, can be used by 3rd party programs that wish to identify file types without having to fork() and exec() file."
 [2008-10-20 06:03 UTC] Bjorn dot Wiberg at its dot uu dot se
The magic files I'm using are here:

http://www.anst.uu.se/bwiberg/files/php/file_4.21_magicfiles.tar.gz

Could you please try those on your system?

Thanks in advance!
 [2008-10-20 10:29 UTC] pajoye@php.net
The PHP version of fileinfo has a bundled DB and I would strongly recommend to use it instead of the system version (portability, already builtin, compiled, etc.)

Can you try using:

$finfo = finfo_open();


finfo should not crash but it may help you already. If you can give me a remote access to an AIX box, I can give it a try.
 [2008-10-20 11:02 UTC] Bjorn dot Wiberg at its dot uu dot se
Sorry, same result, it seems that it comes across the C64 tape type and then crashes (see below).

However -- the byteswap and segmentation faults remind me of tony2001@php.net's comment regarding "a patch that fixes *sprintf() compile issues /../ Though it still segfault both on Linux (in regfree()) and AIX":

  http://bugs.php.net/bug.php?id=45740

Could it be that the patch was applied, but nothing was done regarding the segmentation faults?

Best regards,
Björn


bwiberg@musica-lp03:~$ gdb /apache/php/bin/php
GNU gdb 6.0
Copyright 2003 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "powerpc-ibm-aix5.1.0.0"...s
(gdb) set args  -d extension_dir=/apache/php/lib/php/extensions/debug-non-zts-20071006 -r '$finfo=finfo_open();'
(gdb) run
Starting program: /apache/php/bin/php -d extension_dir=/apache/php/lib/php/extensions/debug-non-zts-20071006 -r '$finfo=finfo_open();'

Program received signal SIGSEGV, Segmentation fault.
0x107ca694 in bs1 (m=0x10ad4340) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c:2106
2106    /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c: No such file or directory.
        in /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c
(gdb) bt full
#0  0x107ca694 in bs1 (m=0x10ad4340) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c:2106
No locals.
#1  0x107ca398 in byteswap (magic=0x10ad4340, nmagic=8476) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c:2036
        i = 0
#2  0x107c9f10 in apprentice_map (ms=0x200d23fc, magicp=0x2ff21d74, nmagicp=0x2ff21d78, fn=0x0) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c:1928
        ptr = (uint32_t *) 0x10ad4280
        version = 5
        needsbyteswap = 1
        dbname = 0x0
        mm = (void *) 0x10ad4280
        ret = 3
        stream = (php_stream *) 0x2ff21cb8
        st = {sb = {st_dev = 1, st_ino = 13, st_mode = 804396216, st_nlink = 12274, st_flag = 7496, st_uid = 804396224, st_gid = 804396320, st_rdev = 48, st_size = 537732188, st_atime = 4444, st_atime_n = 0, 
    st_mtime = 537732192, st_mtime_n = 0, st_ctime = 528, st_ctime_n = 804396296, st_blksize = 512, st_blocks = 0, st_vfstype = 24, st_vfs = 0, st_type = 12, st_gen = 13, st_reserved = {537732220, 537732192, 0, 
      537732192, 537729208, 12, 5, 0, 804396320}}}
#3  0x107c4a18 in apprentice_1 (ms=0x200d23fc, fn=0x0, action=0, mlist=0x200d18a4) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c:253
        magic = (struct magic *) 0x10ad4340
        nmagic = 8476
        ml = (struct mlist *) 0x0
        rv = -1
        mapped = 279784544
#4  0x107c4d1c in file_apprentice (ms=0x200d23fc, fn=0x0, action=0) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/apprentice.c:320
        p = 0x0
        mfn = 0x77 ""
        file_err = 279783108
        errs = -1
        mlist = (struct mlist *) 0x200d18a4
#5  0x107c38f8 in magic_load (ms=0x200d23fc, magicfile=0x0) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/libmagic/magic.c:192
        ml = (struct mlist *) 0x200d23fc
#6  0x107c1c80 in zif_finfo_open (ht=0, return_value=0x200d18e4, return_value_ptr=0x0, this_ptr=0x0, return_value_used=1) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/ext/fileinfo/fileinfo.c:349
        options = 0
        file = 0x0
        file_len = 0
        finfo = (struct php_fileinfo *) 0x200d23c8
        object = (zval *) 0x0
        resolved_path = "\000\000\000\b \tUp\000\000\000\000/�036�/�037\b \r\n�\r\n�000\000\000\000 \r\n�\f ,\000\000\000\000\000\003\024X\000\000\000\022/�036��037`/�036�020\001�/�036�\f�\000\000\000\001\000\000\000\000\000\000\000\000 \f�\f \004\000\000\000\a\000\000\000� \000\000�/�037\b/�037`\000\003\024X\020\001� \r\v�6v\020 \tUp \f\036\030 \f�000\000\000\001\020\205�\000\000\001�\000\000\000\000/�037`\000\003\024X/�037h\000\000\001, \r\n�000\000\000�\000\000\000\022\000\000\000\000\000\000\000\022/�037`"...
        obj = (struct finfo_object *) 0x2ff21ea8
#7  0x100a73d0 in zend_do_fcall_common_helper_SPEC (execute_data=0x202fb9f8) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/Zend/zend_vm_execute.h:315
        opline = (zend_op *) 0x200d22b8
        should_change_scope = 0 '\0'
#8  0x100af058 in ZEND_DO_FCALL_SPEC_CONST_HANDLER (execute_data=0x202fb9f8) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/Zend/zend_vm_execute.h:1574
        opline = (zend_op *) 0x200d22b8
        fname = (zval *) 0x200d22d4
#9  0x100a613c in execute (op_array=0x200d1f50) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/Zend/zend_vm_execute.h:65
        ret = 0
        execute_data = (zend_execute_data *) 0x202fb9f8
        nested = 1 '\001'
        original_in_execution = 0 '\0'
#10 0x1003d0b8 in zend_eval_string (str=0x2ff22906 "$finfo=finfo_op\en();", retval_ptr=0x0, string_name=0x1085b7b8 "Command lin\e cod\e")
    at /home/bwiberg/rpm/BUILD/php5.3-200810170630/Zend/zend_execute_API.c:1111
        local_retval_ptr = (zval *) 0x0
        original_return_value_ptr_ptr = (zval **) 0x0
        original_opline_ptr = (zend_op **) 0x0
        pv = {value = {lval = 804399366, dval = 9.8021850641686377e-78, str = {val = 0x2ff22906 "$finfo=finfo_op\en();", len = 20}, ht = 0x2ff22906, obj = {handle = 804399366, handlers = 0x14}}, 
  refcount__gc = 1, type = 6 '\006', is_ref__gc = 47 '/'}
        new_op_array = (zend_op_array *) 0x200d1f50
        original_active_op_array = (zend_op_array *) 0x0
        original_compiler_options = 2
        retval = 537729252
        l = 537729316
#11 0x1003d2f8 in zend_eval_string_ex (str=0x2ff22906 "$finfo=finfo_op\en();", retval_ptr=0x0, string_name=0x1085b7b8 "Command lin\e cod\e", handle_exceptions=1)
    at /home/bwiberg/rpm/BUILD/php5.3-200810170630/Zend/zend_execute_API.c:1146
        result = 0
#12 0x1000310c in main (argc=5, argv=0x2ff22800) at /home/bwiberg/rpm/BUILD/php5.3-200810170630/sapi/cli/php_cli.c:1169
        __orig_bailout = (sigjmp_buf *) 0x0
        __bailout = {-1, -1, 268444612, 804398288, 537482608, -559038737, 5, 804399104, 804399128, 0, -559038737, -559038737, -559038737, -559038737, -559038737, -559038737, -559038737, -559038737, -559038737, 
  11, 536871100, 268435456, -26, 804398288, 673464868, 0 <repeats 37 times>, 804399128, 0}
        exit_status = 0
        c = -1
---Type <return> to continue, or q <return> to quit---
        file_handle = {type = ZEND_HANDLE_FP, filename = 0x1085b760 "-", opened_path = 0x0, handle = {fd = -264674272, fp = 0xf0396420, stream = {handle = 0xf0396420, isatty = 0, mmap = {len = 0, pos = 0, 
        map = 0x0, buf = 0x0, old_handle = 0x0, old_closer = 0}, reader = 0, fsizer = 0, closer = 0}}, free_filename = 0 '\0'}
        behavior = 6
        reflection_what = 0x0
        orig_optind = 1
        orig_optarg = 0x0
        arg_free = 0x2ff22906 "$finfo=finfo_op\en();"
        arg_excp = (char **) 0x2ff22810
        script_file = 0x0
        interactive = 0
        module_started = 1
        request_started = 1
        lineno = 0
        exec_direct = 0x2ff22906 "$finfo=finfo_op\en();"
        exec_run = 0x0
        exec_begin = 0x0
        exec_end = 0x0
        param_error = 0x0
        hide_argv = 0
        ini_entries_len = 180
        len = 67
        val = 0x2ff228cd "/apach\e/php/lib/php/\ext\ensions/d\ebug-non-zts-20071006"
(gdb) print *m
$1 = {cont_level = 0, flag = 32 ' ', dummy1 = 0 '\0', reln = 61 '=', vallen = 31 '\037', type = 5 '\005', in_type = 0 '\0', in_op = 0 '\0', mask_op = 0 '\0', cond = 0 '\0', dummy2 = 0 '\0', offset = 0, 
  in_offset = 0, lineno = 553648128, _u = {_mask = 0, _s = {_count = 0, _flags = 0}}, value = {b = 67 'C', h = 17206, l = 1127625760, q = 4843115763279687781, hs = "C6", hl = "C64 ", hq = "C64 tap\e", 
    s = "C64 tap\e imag\e fil\e", '\0' <repeats 12 times>, f = 182.203613, d = 6249763483775077}, desc = "T64 tap\e Imag\e", '\0' <repeats 49 times>, mimetype = '\0' <repeats 63 times>}
(gdb) c
Continuing.

Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.
(gdb) q
bwiberg@musica-lp03:~$
 [2008-10-20 16:13 UTC] scottmac@php.net
For big-endian machines its trying to do byte swapping on the internal database which is marked as const.

This happens on OSX too with PowerPC.
 [2008-10-20 23:37 UTC] scottmac@php.net
I've fixed the segfault by copying the memory and letting it do the byteswap there. This however wastes memory in the long run so I'm leaving this assigned to me as a reminder to fix this memory wastage.

It only affects Big-Endian systems though.
 [2009-03-17 02:50 UTC] scottmac@php.net
The performance issue will be fixed when we do the loading in the MINIT 
stage, until then there isn't any other real alternative.
 
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