#40621 [Opn->Csd]: Crash when constructor called inappropriately (statically)

ID: 40621 Updated by: tony2001@php.net Reported By: sean@php.net -Status: Open +Status: Closed Bug Type: Reproducible crash Operating System: Linux PHP Version: 5.2.1 New Comment: This bug has been fixed in CVS. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2007-02-24 20:57:29] sean@php.net Description: ------------ PHP 5.2.x (tried 5.2.1, 5.2.0) crashes if a constructor is called statically from within the host class. Code explains this better. I realize I'm not SUPPOSED to do this, but I did it accidentally (I made a mistake). I expect the error message. It shouldn't, however, crash. Reproduce code: --------------- php -r 'class Foo { private function __construct() { } function get() { self::__construct(); } } Foo::get();' Expected result: ---------------- E_FATAL Here's 5.1.6: Fatal error: Non-static method Foo::__construct() cannot be called statically in Command line code on line 1 In 5.2.0, this was downgraded to E_STRICT, which I suspect is why it crashes (E_FATAL would have bailed, E_STRICT tries to run this messed up code). Actual result: -------------- here's the backtrace: (gdb) run -r 'class Foo { private function __construct() { } function get() { self::__construct(); } } Foo::get();' Starting program: /usr/local/bin/php -r 'class Foo { private function __construct() { } function get() { self::__construct(); } } Foo::get();' [Thread debugging using libthread_db enabled] [New Thread -1214503248 (LWP 28107)] Strict Standards: Non-static method Foo::get() should not be called statically in Command line code on line 1 Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1214503248 (LWP 28107)] 0x083c425c in zend_get_class_entry (zobject=0x0) at /home/sean/downloads/php-5.2.1/Zend/zend_API.c:248 248 if (Z_OBJ_HT_P(zobject)->get_class_entry) { (gdb) bt #0 0x083c425c in zend_get_class_entry (zobject=0x0) at /home/sean/downloads/php-5.2.1/Zend/zend_API.c:248 #1 0x083ec877 in ZEND_INIT_STATIC_METHOD_CALL_SPEC_UNUSED_HANDLER ( execute_data=0xbfd5e800) at /home/sean/downloads/php-5.2.1/Zend/zend_vm_execute.h:1222 #2 0x083e7fc3 in execute (op_array=0xb798f330) at /home/sean/downloads/php-5.2.1/Zend/zend_vm_execute.h:92 #3 0x083e85ed in zend_do_fcall_common_helper_SPEC (execute_data=0xbfd5e980) at /home/sean/downloads/php-5.2.1/Zend/zend_vm_execute.h:234 #4 0x083e90c0 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER (execute_data=0xbfd5e980) at /home/sean/downloads/php-5.2.1/Zend/zend_vm_execute.h:322 #5 0x083e7fc3 in execute (op_array=0xb798d7fc) at /home/sean/downloads/php-5.2.1/Zend/zend_vm_execute.h:92 #6 0x083b6e79 in zend_eval_string ( str=0xbfd5f911 "class Foo { private function __construct() { } function get() { self::__construct(); } } Foo::get();", retval_ptr=0x0, string_name=0x8522074 "Command line code") at /home/sean/downloads/php-5.2.1/Zend/zend_execute_API.c:1151 #7 0x083b7012 in zend_eval_string_ex ( str=0xbfd5f911 "class Foo { private function __construct() { } function get() { self::__construct(); } } Foo::get();", retval_ptr=0x0, string_name=0x8522074 "Command line code", handle_exceptions=1) at /home/sean/downloads/php-5.2.1/Zend/zend_execute_API.c:1185 #8 0x0843d555 in main (argc=3, argv=0xbfd5ed14) at /home/sean/downloads/php-5.2.1/sapi/cli/php_cli.c:1153 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=40621&edit=1