#50299 [Com]: method is called in context of another object
ID: 50299 Comment by: shepik at yandex dot ru Reported By: shepik at yandex dot ru Status: Open Bug Type: SPL related Operating System: * PHP Version: 5.3SVN-2009-11-25 (snap) New Comment: it seems that rewind and valid are called on $P variable and not on the contents of $P variable at the moment foreach was called. #3 0x08397fe1 in zend_call_function (fci=0xbfdeeaf4, fci_cache=0xbfdeeac4) at /home/shepik/php-5.3-200911260930/Zend/zend_execute_API.c:942 #4 0x083bef94 in zend_call_method (object_pp=0xbfdeeb60, obj_ce=0x8f20038, fn_proxy=0x8f20180, function_name=0x871959d rewind, function_name_len=6, retval_ptr_ptr=0x0, param_count=0, arg1=0x0, arg2=0x0) at /home/shepik/php-5.3-200911260930/Zend/zend_interfaces.c:97 #5 0x083bf735 in zend_user_it_rewind (_iter=0x8f23754) at /home/shepik/php-5.3-200911260930/Zend/zend_interfaces.c:261 *(zval*)iter-it.data = {value = {lval = 1, dval = 5.6472996106671002e-268, str = {val = 0x1 Address 0x1 out of bounds, len = 141731200}, ht = 0x1, obj = {handle = 1, handlers = 0x872a580}}, refcount__gc = 3, type = 5 '\005', is_ref__gc = 1 '\001'} now callind valid: #1 0x083bef20 in zend_call_method (object_pp=0xbfdeeb5c, obj_ce=0x8f20038, fn_proxy=0x8f20170, function_name=0x87194c5 valid, function_name_len=5, retval_ptr_ptr=0xbfdeeb58, param_count=0, arg1=0x0, arg2=0x0) at /home/shepik/php-5.3-200911260930/Zend/zend_interfaces.c:88 #2 0x083bf1d9 in zend_user_it_valid (_iter=0x8f23754) at /home/shepik/php-5.3-200911260930/Zend/zend_interfaces.c:163 *(zval*)iter-it.data = {value = {lval = 0, dval = 8.4879831638610893e-314, str = {val = 0x0, len = 4}, ht = 0x0, obj = {handle = 0, handlers = 0x4}}, refcount__gc = 2, type = 0 '\0', is_ref__gc = 1 '\001'} (i don't know if this information is useful at all, but hope it is) Previous Comments: [2009-11-26 11:05:29] shepik at yandex dot ru she...@samoval ~/php-5.3-200911260930 $ gdb sapi/cli/php GNU gdb 6.8 [..] This GDB was configured as i686-pc-linux-gnu... (gdb) run test_variant2.php Starting program: /home/shepik/php-5.3-200911260930/sapi/cli/php test_variant2.php rewind on Foo Program received signal SIGSEGV, Segmentation fault. 0x083a67d7 in zend_get_class_entry (zobject=0x8e536c0) at /home/shepik/php-5.3-200911260930/Zend/zend_API.c:230 230 if (Z_OBJ_HT_P(zobject)-get_class_entry) { (gdb) bt #0 0x083a67d7 in zend_get_class_entry (zobject=0x8e536c0) at /home/shepik/php-5.3-200911260930/Zend/zend_API.c:230 #1 0x083bef20 in zend_call_method (object_pp=0xbfc6b3cc, obj_ce=0x8e50038, fn_proxy=0x8e50170, function_name=0x87194c5 valid, function_name_len=5, retval_ptr_ptr=0xbfc6b3c8, param_count=0, arg1=0x0, arg2=0x0) at /home/shepik/php-5.3-200911260930/Zend/zend_interfaces.c:88 #2 0x083bf1d9 in zend_user_it_valid (_iter=0x8e53754) at /home/shepik/php-5.3-200911260930/Zend/zend_interfaces.c:163 #3 0x08446999 in ZEND_FE_RESET_SPEC_CV_HANDLER (execute_data=0x8e7dba0) at /home/shepik/php-5.3-200911260930/Zend/zend_vm_execute.h:22653 #4 0x083d0b7e in execute (op_array=0x8e51a84) at /home/shepik/php-5.3-200911260930/Zend/zend_vm_execute.h:104 #5 0x083a605e in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /home/shepik/php-5.3-200911260930/Zend/zend.c:1194 #6 0x0833df90 in php_execute_script (primary_file=0xbfc6d8cc) at /home/shepik/php-5.3-200911260930/main/main.c:2231 #7 0x0846b874 in main (argc=2, argv=0xbfc6da24) at /home/shepik/php-5.3-200911260930/sapi/cli/php_cli.c:1190 [2009-11-26 10:18:32] ka...@php.net Thank you for this bug report. To properly diagnose the problem, we need a backtrace to see what is happening behind the scenes. To find out how to generate a backtrace, please read http://bugs.php.net/bugs-generating-backtrace.php for *NIX and http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32 Once you have generated a backtrace, please submit it to this bug report and change the status back to Open. Thank you for helping us make PHP better. [2009-11-25 21:56:09] shepik at yandex dot ru (and i don't know if i should select SPL related or reproducible crash category, so if i'm wrong with selecting SPL, please correct me) [2009-11-25 21:17:57] shepik at yandex dot ru And if change code to $P = new lazyNew(function() use ($P) { $v = new ArrayIterator(array(1,2,3,4,5)); $P = null; return $v; }); instead of fatal error, or 12345, or something else, i get segmentation fault. [2009-11-25 21:10:53] shepik at yandex dot ru Description: I tried this in php 5.3.2-dev (snapshot from 2009-11-19
#50299 [Fbk-Opn]: method is called in context of another object
ID: 50299 User updated by: shepik at yandex dot ru Reported By: shepik at yandex dot ru -Status: Feedback +Status: Open Bug Type: SPL related Operating System: * PHP Version: 5.3SVN-2009-11-25 (snap) New Comment: she...@samoval ~/php-5.3-200911260930 $ gdb sapi/cli/php GNU gdb 6.8 [..] This GDB was configured as i686-pc-linux-gnu... (gdb) run test_variant2.php Starting program: /home/shepik/php-5.3-200911260930/sapi/cli/php test_variant2.php rewind on Foo Program received signal SIGSEGV, Segmentation fault. 0x083a67d7 in zend_get_class_entry (zobject=0x8e536c0) at /home/shepik/php-5.3-200911260930/Zend/zend_API.c:230 230 if (Z_OBJ_HT_P(zobject)-get_class_entry) { (gdb) bt #0 0x083a67d7 in zend_get_class_entry (zobject=0x8e536c0) at /home/shepik/php-5.3-200911260930/Zend/zend_API.c:230 #1 0x083bef20 in zend_call_method (object_pp=0xbfc6b3cc, obj_ce=0x8e50038, fn_proxy=0x8e50170, function_name=0x87194c5 valid, function_name_len=5, retval_ptr_ptr=0xbfc6b3c8, param_count=0, arg1=0x0, arg2=0x0) at /home/shepik/php-5.3-200911260930/Zend/zend_interfaces.c:88 #2 0x083bf1d9 in zend_user_it_valid (_iter=0x8e53754) at /home/shepik/php-5.3-200911260930/Zend/zend_interfaces.c:163 #3 0x08446999 in ZEND_FE_RESET_SPEC_CV_HANDLER (execute_data=0x8e7dba0) at /home/shepik/php-5.3-200911260930/Zend/zend_vm_execute.h:22653 #4 0x083d0b7e in execute (op_array=0x8e51a84) at /home/shepik/php-5.3-200911260930/Zend/zend_vm_execute.h:104 #5 0x083a605e in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /home/shepik/php-5.3-200911260930/Zend/zend.c:1194 #6 0x0833df90 in php_execute_script (primary_file=0xbfc6d8cc) at /home/shepik/php-5.3-200911260930/main/main.c:2231 #7 0x0846b874 in main (argc=2, argv=0xbfc6da24) at /home/shepik/php-5.3-200911260930/sapi/cli/php_cli.c:1190 Previous Comments: [2009-11-26 10:18:32] ka...@php.net Thank you for this bug report. To properly diagnose the problem, we need a backtrace to see what is happening behind the scenes. To find out how to generate a backtrace, please read http://bugs.php.net/bugs-generating-backtrace.php for *NIX and http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32 Once you have generated a backtrace, please submit it to this bug report and change the status back to Open. Thank you for helping us make PHP better. [2009-11-25 21:56:09] shepik at yandex dot ru (and i don't know if i should select SPL related or reproducible crash category, so if i'm wrong with selecting SPL, please correct me) [2009-11-25 21:17:57] shepik at yandex dot ru And if change code to $P = new lazyNew(function() use ($P) { $v = new ArrayIterator(array(1,2,3,4,5)); $P = null; return $v; }); instead of fatal error, or 12345, or something else, i get segmentation fault. [2009-11-25 21:10:53] shepik at yandex dot ru Description: I tried this in php 5.3.2-dev (snapshot from 2009-11-19, latest php for windows available) and in php 5.3.0 on linux. I tried to do something like 'lazy object instantiation', and found this strange behaviour of php. Method valid declared in lazyNew class is called in context of instance of ArrayIterator class. Reproduce code: --- ?php class lazyNew implements Iterator { private $obj = null; private $func ; public function __construct($func) { $this-func = $func; } public function init() { if ($this-obj === null) { $func = $this-func; $this-obj = $func(); } return $this-obj; } public function current() { return $this-init()-current(); } public function valid() { echo valid on .get_class($this).\n; //also try var_dump($this) return $this-init()-valid(); } public function next() { return $this-init()-next(); } public function key() { return $this-init()-key(); } public function rewind() { echo rewind on .get_class($this).\n; return $this-init()-rewind(); } } $P = new lazyNew(function() use ($P) { return $P = new ArrayIterator(array(1,2,3,4,5)); }); foreach ($P as $val) echo($val); ? Expected result: rewind on lazyNew valid on lazyNew 12345 Actual result: -- rewind on lazyNew valid on ArrayIterator Fatal error: Call to undefined method ArrayIterator::init() in /storage1/www/htdocs/evectio/scripts
#50299 [NEW]: method is called in context of another object
From: shepik at yandex dot ru Operating system: windows / linux PHP version: 5.3SVN-2009-11-25 (snap) PHP Bug Type: SPL related Bug description: method is called in context of another object Description: I tried this in php 5.3.2-dev (snapshot from 2009-11-19, latest php for windows available) and in php 5.3.0 on linux. I tried to do something like 'lazy object instantiation', and found this strange behaviour of php. Method valid declared in lazyNew class is called in context of instance of ArrayIterator class. Reproduce code: --- ?php class lazyNew implements Iterator { private $obj = null; private $func ; public function __construct($func) { $this-func = $func; } public function init() { if ($this-obj === null) { $func = $this-func; $this-obj = $func(); } return $this-obj; } public function current() { return $this-init()-current(); } public function valid() { echo valid on .get_class($this).\n; //also try var_dump($this) return $this-init()-valid(); } public function next() { return $this-init()-next(); } public function key() { return $this-init()-key(); } public function rewind() { echo rewind on .get_class($this).\n; return $this-init()-rewind(); } } $P = new lazyNew(function() use ($P) { return $P = new ArrayIterator(array(1,2,3,4,5)); }); foreach ($P as $val) echo($val); ? Expected result: rewind on lazyNew valid on lazyNew 12345 Actual result: -- rewind on lazyNew valid on ArrayIterator Fatal error: Call to undefined method ArrayIterator::init() in /storage1/www/htdocs/evectio/scripts/test.php on line 20 -- Edit bug report at http://bugs.php.net/?id=50299edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=50299r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=50299r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=50299r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=50299r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50299r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=50299r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=50299r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=50299r=needscript Try newer version: http://bugs.php.net/fix.php?id=50299r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=50299r=support Expected behavior: http://bugs.php.net/fix.php?id=50299r=notwrong Not enough info: http://bugs.php.net/fix.php?id=50299r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=50299r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=50299r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=50299r=php4 Daylight Savings:http://bugs.php.net/fix.php?id=50299r=dst IIS Stability: http://bugs.php.net/fix.php?id=50299r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=50299r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=50299r=float No Zend Extensions: http://bugs.php.net/fix.php?id=50299r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=50299r=mysqlcfg
#50299 [Com]: method is called in context of another object
ID: 50299 Comment by: shepik at yandex dot ru Reported By: shepik at yandex dot ru Status: Open Bug Type: SPL related Operating System: windows / linux PHP Version: 5.3SVN-2009-11-25 (snap) New Comment: And if change code to $P = new lazyNew(function() use ($P) { $v = new ArrayIterator(array(1,2,3,4,5)); $P = null; return $v; }); instead of fatal error, or 12345, or something else, i get segmentation fault. Previous Comments: [2009-11-25 21:10:53] shepik at yandex dot ru Description: I tried this in php 5.3.2-dev (snapshot from 2009-11-19, latest php for windows available) and in php 5.3.0 on linux. I tried to do something like 'lazy object instantiation', and found this strange behaviour of php. Method valid declared in lazyNew class is called in context of instance of ArrayIterator class. Reproduce code: --- ?php class lazyNew implements Iterator { private $obj = null; private $func ; public function __construct($func) { $this-func = $func; } public function init() { if ($this-obj === null) { $func = $this-func; $this-obj = $func(); } return $this-obj; } public function current() { return $this-init()-current(); } public function valid() { echo valid on .get_class($this).\n; //also try var_dump($this) return $this-init()-valid(); } public function next() { return $this-init()-next(); } public function key() { return $this-init()-key(); } public function rewind() { echo rewind on .get_class($this).\n; return $this-init()-rewind(); } } $P = new lazyNew(function() use ($P) { return $P = new ArrayIterator(array(1,2,3,4,5)); }); foreach ($P as $val) echo($val); ? Expected result: rewind on lazyNew valid on lazyNew 12345 Actual result: -- rewind on lazyNew valid on ArrayIterator Fatal error: Call to undefined method ArrayIterator::init() in /storage1/www/htdocs/evectio/scripts/test.php on line 20 -- Edit this bug report at http://bugs.php.net/?id=50299edit=1
#50299 [Com]: method is called in context of another object
ID: 50299 Comment by: shepik at yandex dot ru Reported By: shepik at yandex dot ru Status: Open Bug Type: SPL related Operating System: windows / linux PHP Version: 5.3SVN-2009-11-25 (snap) New Comment: (and i don't know if i should select SPL related or reproducible crash category, so if i'm wrong with selecting SPL, please correct me) Previous Comments: [2009-11-25 21:17:57] shepik at yandex dot ru And if change code to $P = new lazyNew(function() use ($P) { $v = new ArrayIterator(array(1,2,3,4,5)); $P = null; return $v; }); instead of fatal error, or 12345, or something else, i get segmentation fault. [2009-11-25 21:10:53] shepik at yandex dot ru Description: I tried this in php 5.3.2-dev (snapshot from 2009-11-19, latest php for windows available) and in php 5.3.0 on linux. I tried to do something like 'lazy object instantiation', and found this strange behaviour of php. Method valid declared in lazyNew class is called in context of instance of ArrayIterator class. Reproduce code: --- ?php class lazyNew implements Iterator { private $obj = null; private $func ; public function __construct($func) { $this-func = $func; } public function init() { if ($this-obj === null) { $func = $this-func; $this-obj = $func(); } return $this-obj; } public function current() { return $this-init()-current(); } public function valid() { echo valid on .get_class($this).\n; //also try var_dump($this) return $this-init()-valid(); } public function next() { return $this-init()-next(); } public function key() { return $this-init()-key(); } public function rewind() { echo rewind on .get_class($this).\n; return $this-init()-rewind(); } } $P = new lazyNew(function() use ($P) { return $P = new ArrayIterator(array(1,2,3,4,5)); }); foreach ($P as $val) echo($val); ? Expected result: rewind on lazyNew valid on lazyNew 12345 Actual result: -- rewind on lazyNew valid on ArrayIterator Fatal error: Call to undefined method ArrayIterator::init() in /storage1/www/htdocs/evectio/scripts/test.php on line 20 -- Edit this bug report at http://bugs.php.net/?id=50299edit=1