Bug #79250 [Opn->Fbk]: EG(current_module) NULL during property declaration

Edit report at https://bugs.php.net/bug.php?id=79250&edit=1 ID: 79250 Updated by: cmb@php.net Reported by: KseniMailWOW at gmail dot com Summary: EG(current_module) NULL during property declaration -Status: Open +Status: Feedback Type: Bug Package: Class/Object related Operating System: All (Windows7+) PHP Version: 7.4.3RC1 -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: The pastbin samples are no longer available. Has this issue be resolved in the meantime? Previous Comments: ------------------------------------------------------------------------ [2020-02-10 16:54:12] KseniMailWOW at gmail dot com Working code happens in function void Test() This function starts after : php_request_startup if (sapi_module.startup(&sapi_module) != FAILURE) { SessionInit2 = php_request_startup()!=FAILURE; if(SessionInit2) Test(); } // zend_declare_property_null(register_class_entry, "line", sizeof("line")-1, ZEND_ACC_PROTECTED); // ERROR!!! // Project Project1.exe raised exception class $C0000005 with message 'access violation at 0x682d7e47: read of address 0x0000004c'. // php7ts.zend_declare_property: // 682D7E30 53 push ebx // 682D7E31 8B5C2408 mov ebx,[esp+$08] // 682D7E35 55 push ebp // 682D7E36 8B6C2414 mov ebp,[esp+$14] // 682D7E3A 56 push esi // 682D7E3B F60301 test byte ptr [ebx],$01 // 682D7E3E 57 push edi // 682D7E3F 7413 jz $682d7e54 // 682D7E41 8B8318010000 mov eax,[ebx+$00000118] // 682D7E47 80784C01 cmp byte ptr [eax+$4c],$01 !!!!!!!!!!!!!!!! ------------------------------------------------------------------------ [2020-02-10 16:50:56] KseniMailWOW at gmail dot com Sorry for not immediately providing the full code that shows errors https://pastebin.com/1K4iiEH3 Code execution works well, but standard functions fail a function call is_persistent_class ------------------------------------------------------------------------ [2020-02-10 11:33:14] nikic@php.net Your link does not show a use of zend_declare_property_*. Can you please show at which point you execute this call? ------------------------------------------------------------------------ [2020-02-10 11:23:52] KseniMailWOW at gmail dot com The following patch has been added/updated: Patch Name: ErrorCorrectingFunction Revision: 1581333832 URL: https://bugs.php.net/patch-display.php?bug=79250&patch=ErrorCorrectingFunction&revision=1581333832 ------------------------------------------------------------------------ [2020-02-10 11:21:16] KseniMailWOW at gmail dot com Description: ------------ Semple PHP initialization https://pastebin.com/64XuRa4k Calling zend_declare_property_* results in an empty memory access error (AV MEMORY READ). The culprit became empty EG(current_module) In the new procedure is_persistent_class (https://github.com/php/php-src/blob/cb7b21009b951d6a08fa948c775c141f6666204c/Zend/zend_API.c#L3474) Test script: --------------- zend_class_entry tmp; INIT_CLASS_ENTRY(tmp, "Hgyjy", NULL); return zend_register_internal_class(&tmp); Replacing with, works great!!!!!!!!!!!!!!!!!!!!!!!! static zend_always_inline zend_bool is_persistent_class(zend_class_entry *ce) { return (ce->type & ZEND_INTERNAL_CLASS) && (!ce->info.internal.module || ce->info.internal.module->type == MODULE_PERSISTENT); } OR : static zend_always_inline zend_bool is_persistent_class(zend_class_entry *ce) { return (ce->type & ZEND_INTERNAL_CLASS) && (ce->info.internal.module && (ce->info.internal.module->type == MODULE_PERSISTENT)); } ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79250&edit=1