[php-src] Issue #19200: Not checked realloc and malloc result can result in unclean crash

Issue: https://github.com/php/php-src/issues/19200 Author: bukka ### Description This came from the PVC-Studio analyzer report that reported those case for realloc where the original pointer can be lost in this way: ``` c ZEND_API void zend_collect_module_handlers(void) { .... module_request_startup_handlers = (zend_module_entry**)realloc( // <= module_request_startup_handlers, sizeof(zend_module_entry*) * (startup_count + 1 + shutdown_count + 1 + post_deactivate_count + 1)); .... } ``` **Message**: [V701](https://pvs-studio.com/en/docs/warnings/v701/) realloc() possible leak: when realloc() fails in allocating memory, original pointer 'module_request_startup_handlers' is lost. Consider assigning realloc() to a temporary pointer. **Path**: Zend/zend_API.c **Line**: 2514 <details> <summary>Other fragments V701</summary> <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'zend_version_info' is lost. Consider assigning realloc() to a temporary pointer. zend.c 1299 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'module_request_startup_handlers' is lost. Consider assigning realloc() to a temporary pointer. zend_API.c 2514 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'modules_dl_loaded' is lost. Consider assigning realloc() to a temporary pointer. zend_API.c 2526 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'class_cleanup_handlers' is lost. Consider assigning realloc() to a temporary pointer. zend_API.c 2553 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'zend_flf_handlers' is lost. Consider assigning realloc() to a temporary pointer. zend_API.c 3086 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'zend_flf_functions' is lost. Consider assigning realloc() to a temporary pointer. zend_API.c 3087 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'p' is lost. Consider assigning realloc() to a temporary pointer. zend_alloc.c 3299 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'ce->interfaces' is lost. Consider assigning realloc() to a temporary pointer. zend_inheritance.c 1576 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'ce->interfaces' is lost. Consider assigning realloc() to a temporary pointer. zend_inheritance.c 2194 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'q->set' is lost. Consider assigning realloc() to a temporary pointer. ir_private.h 593 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'strtab->buf' is lost. Consider assigning realloc() to a temporary pointer. ir_strtab.c 81 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'blacklist->entries' is lost. Consider assigning realloc() to a temporary pointer. zend_accelerator_blacklist.c 236 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer '* tmphstbuf' is lost. Consider assigning realloc() to a temporary pointer. network.c 1296 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'php_ini_scanned_files' is lost. Consider assigning realloc() to a temporary pointer. php_ini.c 702 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'b->value' is lost. Consider assigning realloc() to a temporary pointer. php_ini_builder.h 65 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'zend_extensions' is lost. Consider assigning realloc() to a temporary pointer. phpdbg.c 1216 <br> V701 realloc() possible leak: when realloc() fails in allocating memory, original pointer 'state->code' is lost. Consider assigning realloc() to a temporary pointer. phpdbg_prompt.c 245 </details> We have got many more places with malloc where the result is not checked. The easiest solution would be to use perealloc and pemalloc which should cleanly exit. It's somewhere between a bug and improvement but treating that as a bug would reduce the conflicts for future fixes and the risk should be quite minimal in this replacement. ### PHP Version ```plain PHP 8.3 ``` ### Operating System _No response_