Fix GH-9675: Re-adjust run_time_cache init for internal enum methods

Closes GH-10143.

Author: Petar Obradović

NEWS

@@ -10,6 +10,8 @@ PHP                                                                        NEWS
     unpacked array). (Arnaud)
   . Fix GH-9735 (Fiber stack variables do not participate in cycle collector).
     (Arnaud)
+  . Fix GH-9675 (Broken run_time_cache init for internal enum methods).
+    (Petar Obradović, Bob)
 
 - FPM:
   . Fixed bug #77106 (Missing separator in FPM FastCGI errors). (Jakub Zelenka)

Zend/zend_API.c

@@ -2714,7 +2714,7 @@ ZEND_API zend_result zend_register_functions(zend_class_entry *scope, const zend
 		internal_function->prototype = NULL;
 		internal_function->attributes = NULL;
 		if (EG(active)) { // at run-time: this ought to only happen if registered with dl() or somehow temporarily at runtime
-			ZEND_MAP_PTR_INIT(internal_function->run_time_cache, zend_arena_alloc(&CG(arena), zend_internal_run_time_cache_reserved_size()));
+			ZEND_MAP_PTR_INIT(internal_function->run_time_cache, zend_arena_calloc(&CG(arena), 1, zend_internal_run_time_cache_reserved_size()));
 		} else {
 			ZEND_MAP_PTR_NEW(internal_function->run_time_cache);
 		}

Zend/zend_enum.c

@@ -409,8 +409,11 @@ static void zend_enum_register_func(zend_class_entry *ce, zend_known_string_id n
 	zif->module = EG(current_module);
 	zif->scope = ce;
 	zif->T = ZEND_OBSERVER_ENABLED;
-	ZEND_MAP_PTR_NEW(zif->run_time_cache);
-	ZEND_MAP_PTR_SET(zif->run_time_cache, zend_arena_alloc(&CG(arena), zend_internal_run_time_cache_reserved_size()));
+    if (EG(active)) { // at run-time
+		ZEND_MAP_PTR_INIT(zif->run_time_cache, zend_arena_calloc(&CG(arena), 1, zend_internal_run_time_cache_reserved_size()));
+	} else {
+		ZEND_MAP_PTR_NEW(zif->run_time_cache);
+	}
 
 	if (!zend_hash_add_ptr(&ce->function_table, name, zif)) {
 		zend_error_noreturn(E_COMPILE_ERROR, "Cannot redeclare %s::%s()", ZSTR_VAL(ce->name), ZSTR_VAL(name));