[Xapian-tickets] [Xapian] #748: PHP7 bindings segfaults

[Xapian]

#748: PHP7 bindings segfaults
------------------------------------------+-------------------
        Reporter:  atlantos               |      Owner:
            Type:  defect                 |     Status:  new
        Priority:  normal                 |  Milestone:  1.4.x
       Component:  Xapian-bindings (PHP)  |    Version:  1.4.3
        Severity:  normal                 |   Keywords:  PHP7
      Blocked By:                         |   Blocking:
Operating System:  Linux                  |
------------------------------------------+-------------------
 I have issue while running Xapian with CentOS7 x86_64. My environment is:
 {{{
 ~ cat /etc/redhat-release
 CentOS Linux release 7.3.1611 (Core)
 ~ rpm  -qa | grep php
 php71w-common-7.1.2-1.w7.x86_64
 php71w-cli-7.1.2-1.w7.x86_64
 xapian-bindings-php7-1.4.3-1.el7.x86_64
 ~ php -i | grep -A 3 Xapian
 Xapian Support => enabled
 Xapian Compiled Version => 1.4.3
 Xapian Linked Version => 1.4.3
 }}}
 PHP packages are taken from https://webtatic.com/projects/yum-repository/
 , and Xapian packages are compiled from the source.

 The issue is that PHP segfaults. For example "gdb php" run with "-i"
 option results in:
 {{{
 Program received signal SIGSEGV, Segmentation fault.
 0x00005555557e1b09 in _zval_ptr_dtor ()
 (gdb) backtrace
 #0  0x00005555557e1b09 in _zval_ptr_dtor ()
 #1  0x00005555557e0082 in free_zend_constant ()
 #2  0x00005555558038a2 in zend_hash_destroy ()
 #3  0x00005555557f2039 in zend_shutdown ()
 #4  0x000055555578fffb in php_module_shutdown ()
 #5  0x00005555556252c5 in main ()
 (gdb)
 }}}
 Here is additional information as reported by valgrind:
 {{{
 ~ USE_ZEND_ALLOC=0 valgrind --tool=memcheck  php -v
 ==12785== Memcheck, a memory error detector
 ==12785== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
 ==12785== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright
 info
 ==12785== Command: php -v
 ==12785==
 PHP 7.1.2 (cli) (built: Feb 18 2017 11:22:37) ( NTS )
 Copyright (c) 1997-2017 The PHP Group
 Zend Engine v3.1.0, Copyright (c) 1998-2017 Zend Technologies
 ==12785==
 ==12785== HEAP SUMMARY:
 ==12785==     in use at exit: 8,107 bytes in 94 blocks
 ==12785==   total heap usage: 21,692 allocs, 21,598 frees, 2,271,702 bytes
 allocated
 ==12785==
 ==12785== LEAK SUMMARY:
 ==12785==    definitely lost: 4,320 bytes in 28 blocks
 ==12785==    indirectly lost: 2,269 bytes in 36 blocks
 ==12785==      possibly lost: 0 bytes in 0 blocks
 ==12785==    still reachable: 1,518 bytes in 30 blocks
 ==12785==         suppressed: 0 bytes in 0 blocks
 ==12785== Rerun with --leak-check=full to see details of leaked memory
 ==12785==
 ==12785== For counts of detected and suppressed errors, rerun with: -v
 ==12785== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
 }}}
 Please let me know if you need to provide additional information.

--
Ticket URL: <https://trac.xapian.org/ticket/748>
Xapian <https://xapian.org/>
Xapian