SIGSEV on FreeBSD 13 and FreeBSD 14, php 8.3, php-fpm

[chris-x-tra]

Hello, i managed to compile everythin. I changed in the Makefile:
CC = clang
and
CXX = clang++

There were serveral warnings while compiling:
`
/home/chrissie/pdlib/pdlib.cc:139:61: warning: offset of on non-standard-layout type 'face_recognition' (aka '_face_recognition') [-Winvalid-offsetof]
139 | face_recognition fr = (face_recognition)((char*)object - XtOffsetOf(face_recognition, std));
| ^ ~~~
/usr/local/include/php/Zend/zend_portability.h:370:36: note: expanded from macro 'XtOffsetOf'
370 | # define XtOffsetOf(s_type, field) offsetof(s_type, field)
| ^ ~~~~~
/usr/include/stddef.h:73:31: note: expanded from macro 'offsetof'
73 | #define offsetof(type, field) __offsetof(type, field)
| ^ ~~~~~
/usr/include/sys/cdefs.h:460:34: note: expanded from macro '__offsetof'
460 | #define __offsetof(type, field) __builtin_offsetof(type, field)
| ^ ~~~~~
/home/chrissie/pdlib/pdlib.cc:173:41: warning: offset of on non-standard-layout type 'face_recognition' (aka '_face_recognition') [-Winvalid-offsetof]
173 | face_recognition_obj_handlers.offset = XtOffsetOf(face_recognition, std);
| ^ ~~~
/usr/local/include/php/Zend/zend_portability.h:370:36: note: expanded from macro 'XtOffsetOf'
370 | # define XtOffsetOf(s_type, field) offsetof(s_type, field)
| ^ ~~~~~
/usr/include/stddef.h:73:31: note: expanded from macro 'offsetof'
73 | #define offsetof(type, field) __offsetof(type, field)
| ^ ~~~~~
/usr/include/sys/cdefs.h:460:34: note: expanded from macro '__offsetof'
460 | #define __offsetof(type, field) __builtin_offsetof(type, field)
| ^ ~~~~~

/home/chrissie/pdlib/src/face_recognition.cc:12:47: warning: offset of on non-standard-layout type 'face_recognition' (aka '_face_recognition') [-Winvalid-offsetof]
12 | return (face_recognition*)((char*)(obj) - XtOffsetOf(face_recognition, std));
| ^ ~~~
/usr/local/include/php/Zend/zend_portability.h:370:36: note: expanded from macro 'XtOffsetOf'
370 | # define XtOffsetOf(s_type, field) offsetof(s_type, field)
| ^ ~~~~~
/usr/include/stddef.h:73:31: note: expanded from macro 'offsetof'
73 | #define offsetof(type, field) __offsetof(type, field)
| ^ ~~~~~
/usr/include/sys/cdefs.h:460:34: note: expanded from macro '__offsetof'
460 | #define __offsetof(type, field) __builtin_offsetof(type, field)

/home/chrissie/pdlib/src/face_recognition.cc:115:24: warning: variable length arrays in C++ are a Clang extension [-Wvla-cxx-extension]
115 | point parts_points[parts_count];
`

After Installation and activation of the Module, it crashens immediately upon start of the php-fpm daemon.

`

lldb /usr/local/sbin/php-fpm

(lldb) target create "/usr/local/sbin/php-fpm"
Current executable set to '/usr/local/sbin/php-fpm' (x86_64).
(lldb) run
Process 36258 launched: '/usr/local/sbin/php-fpm' (x86_64)
Process 36258 stopped

• thread Mention -DBUILD_SHARED_LIBS in cmake of dlib #1, name = 'php-fpm', stop reason = signal SIGSEGV: address not mapped to object (fault address: 0x831743500)
  frame #0: 0x0000000831743500
  error: memory read failed for 0x831743400
  (lldb) bt
• thread Mention -DBUILD_SHARED_LIBS in cmake of dlib #1, name = 'php-fpm', stop reason = signal SIGSEGV: address not mapped to object (fault address: 0x831743500)
  • frame #0: 0x0000000831743500
    frame Mention -DBUILD_SHARED_LIBS in cmake of dlib #1: 0x00000008295a06ff libc.so.7__cxa_finalize + 319 frame #2: 0x00000008295a0c31 libc.so.7exit + 33
    frame Adding support for cnn face detector #3: 0x0000000000b73b22 php-fpmfpm_unix_init_main at fpm_unix.c:663:8 frame #4: 0x0000000000b56144 php-fpmfpm_init(argc=1, argv=0x0000000820f99ed8, config=0x0000000000000000, prefix=0x0000000000000000, pid=0x0000000000000000, test_conf=0, run_as_root=0, force_daemon=-1, force_stderr=0) at fpm.c:59:10
    frame Landmark detection (custom model and class-based) #5: 0x0000000000b6300f php-fpmmain(argc=1, argv=0x0000000820f99ed8) at fpm_main.c:1819:36 frame #6: 0x00000000003e7320 php-fpm_start(ap=, cleanup=) at crt1_c.c:71:7
    `

what can i do? can you help me?

regards, Chris.

[Teetoow]

I confirm the problem under FreeBSD 14.2 with FreeBSD C++ compiler, GCC13 and CLANG 18 compilers.
This bug might exist since several years (https://www.reddit.com/r/NextCloud/comments/i7807r/anyone_able_to_get_pdlib_compiled_and_functioning/?rdt=56332) and nobody corrected that bug..

[Teetoow]

after debugging the problem i found a bug in the FreeBSD libc due to a subtle code in the dlib source code.
I proposed a patch to the FreeBSD developers. I created a bug report for that:
FreeBSD bug report

[kevans91]

This is a dupe of #39

[chris-x-tra]

I updated to FreeBSD 8.4-BETA1 today, and it works. :)