Bug #74137 [Opn]: phpdbg test segfault

Edit report at https://bugs.php.net/bug.php?id=74137&edit=1 ID: 74137 User updated by: julien at lepiller dot eu Reported by: julien at lepiller dot eu Summary: phpdbg test segfault Status: Open Type: Bug Package: phpdbg Operating System: GNU/Linux PHP Version: 7.1.2 Block user comment: N Private report: N New Comment: I've also reproduced the crash with archlinux's phpdbg by running the following command: phpdbg -d "zend_extension=/usr/lib/php/modules/opcache.so" -f test.php and an included file with modification time of 0. So it affects at least two distributions. Previous Comments: ------------------------------------------------------------------------ [2017-02-20 19:56:41] julien at lepiller dot eu Description: ------------ the sapi/phpdbg/tests/include_once.phpt and sapi/phpdbg/tests/phpdbg_get_executable_stream_wrapper.phpt fail with a segfault after printing the expected output. It seems that this bug is triggered by the modification time of the included *.inc files since the tests pass successfully when I touch them. Setting modification time to 0 with low-level tools (guile's (utime "test.php" 0 0)) of any included or required file recreates the crash. Setting it on the php file does not reproduce the crash. Sufficient command-line to reproduce the crash is phpdbg -d "zend_extension=/tmp/guix-build-php-7.1.2.drv-0/php-7.1.2/modules/opcache.so" -f "test.php", where test.php includes or requires a file whose modification time is 0. Note that phpdbg points to an executable built by the guix package manager, and has nothing to do with my current distribution. I could reproduce the crash on GuixSD and Fedora 24. Actual result: -------------- #0 zend_hash_destroy (ht=0xfe6538 <phpdbg_globals+1400>) at /tmp/guix-build-php-7.1.2.drv-0/php-7.1.2/Zend/zend_hash.c:1249 #1 0x0000000000776921 in zm_shutdown_phpdbg (type=<optimized out>, module_number=<optimized out>) at /tmp/guix-build-php-7.1.2.drv-0/php-7.1.2/sapi/phpdbg/phpdbg.c:234 #2 0x00000000006d9333 in module_destructor (module=module@entry=0x10a44a0) at /tmp/guix-build-php-7.1.2.drv-0/php-7.1.2/Zend/zend_API.c:2499 #3 0x00000000006d23cc in module_destructor_zval (zv=<optimized out>) at /tmp/guix-build-php-7.1.2.drv-0/php-7.1.2/Zend/zend.c:632 #4 0x00000000006e4229 in _zend_hash_del_el_ex (prev=<optimized out>, p=<optimized out>, idx=<optimized out>, ht=<optimized out>) at /tmp/guix-build-php-7.1.2.drv-0/php-7.1.2/Zend/zend_hash.c:998 #5 _zend_hash_del_el (p=0x1073880, idx=47, ht=0xfe30a0 <module_registry>) at /tmp/guix-build-php-7.1.2.drv-0/php-7.1.2/Zend/zend_hash.c:1021 #6 zend_hash_graceful_reverse_destroy (ht=ht@entry=0xfe30a0 <module_registry>) at /tmp/guix-build-php-7.1.2.drv-0/php-7.1.2/Zend/zend_hash.c:1477 #7 0x00000000006d781c in zend_destroy_modules () at /tmp/guix-build-php-7.1.2.drv-0/php-7.1.2/Zend/zend_API.c:1978 #8 0x00000000006d2eb5 in zend_shutdown () at /tmp/guix-build-php-7.1.2.drv-0/php-7.1.2/Zend/zend.c:871 #9 0x0000000000673acb in php_module_shutdown () at /tmp/guix-build-php-7.1.2.drv-0/php-7.1.2/main/main.c:2405 #10 0x0000000000444846 in main (argc=69, argv=0x7fffffffd3d8) at /tmp/guix-build-php-7.1.2.drv-0/php-7.1.2/sapi/phpdbg/phpdbg.c:2156 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=74137&edit=1