Bug #79247 [NEW]: Garbage collecting variant objects segfaults

From: cmb Operating system: Windows only PHP version: 7.4Git-2020-02-08 (Git) Package: COM related Bug Type: Bug Bug description:Garbage collecting variant objects segfaults Description: ------------ As of PHP 7.4.0, running the cyclic garbage collector on variant objects segfaults. Test script: --------------- <?php $keep = new variant(null); var_dump(gc_collect_cycles()); ?> Expected result: ---------------- int(0) Actual result: -------------- php7_debug.dll!gc_mark_grey(_zend_refcounted * ref, _gc_stack * stack) Line 837 (c:\php-sdk\phpdev\vc15\x86\php-src-7.4\Zend\zend_gc.c:837) php7_debug.dll!gc_mark_roots(_gc_stack * stack) Line 977 (c:\php-sdk\phpdev\vc15\x86\php-src-7.4\Zend\zend_gc.c:977) php7_debug.dll!zend_gc_collect_cycles() Line 1452 (c:\php-sdk\phpdev\vc15\x86\php-src-7.4\Zend\zend_gc.c:1452) php7_debug.dll!zif_gc_collect_cycles(_zend_execute_data * execute_data, _zval_struct * return_value) Line 375 (c:\php-sdk\phpdev\vc15\x86\php-src-7.4\Zend\zend_builtin_functions.c:375) php7_debug.dll!ZEND_DO_ICALL_SPEC_RETVAL_USED_HANDLER(_zend_execute_data * execute_data) Line 1314 (c:\php-sdk\phpdev\vc15\x86\php-src-7.4\Zend\zend_vm_execute.h:1314) php7_debug.dll!execute_ex(_zend_execute_data * ex) Line 53611 (c:\php-sdk\phpdev\vc15\x86\php-src-7.4\Zend\zend_vm_execute.h:53611) php7_debug.dll!zend_execute(_zend_op_array * op_array, _zval_struct * return_value) Line 57913 (c:\php-sdk\phpdev\vc15\x86\php-src-7.4\Zend\zend_vm_execute.h:57913) php7_debug.dll!zend_execute_scripts(int type, _zval_struct * retval, int file_count, ...) Line 1665 (c:\php-sdk\phpdev\vc15\x86\php-src-7.4\Zend\zend.c:1665) php7_debug.dll!php_execute_script(_zend_file_handle * primary_file) Line 2617 (c:\php-sdk\phpdev\vc15\x86\php-src-7.4\main\main.c:2617) php.exe!do_cli(int argc, char * * argv) Line 961 (c:\php-sdk\phpdev\vc15\x86\php-src-7.4\sapi\cli\php_cli.c:961) php.exe!main(int argc, char * * argv) Line 1356 (c:\php-sdk\phpdev\vc15\x86\php-src-7.4\sapi\cli\php_cli.c:1356) -- Edit bug report at https://bugs.php.net/bug.php?id=79247&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79247&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79247&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79247&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79247&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79247&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79247&r=support Expected behavior: https://bugs.php.net/fix.php?id=79247&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79247&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79247&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79247&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79247&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79247&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79247&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79247&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79247&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79247&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79247&r=mysqlcfg