MFH: fix #41421 (Uncaught exception from a stream wrapper segfaults)

Zend/tests/bug41421.phpt

@@ -0,0 +1,29 @@
+--TEST--
+Bug #41421 (Uncaught exception from a stream wrapper segfaults)
+--FILE--
+<?php
+
+class wrapper {
+	function stream_open() {
+		return true;
+	}
+	function stream_eof() {
+		throw new exception();
+	}
+}
+
+stream_wrapper_register("wrap", "wrapper");
+$fp = fopen("wrap://...", "r");
+feof($fp);
+
+echo "Done\n";
+?>
+--EXPECTF--	
+Warning: feof(): wrapper::stream_eof is not implemented! Assuming EOF in %s on line %d
+
+Fatal error: Uncaught exception 'Exception' in %s:%d
+Stack trace:
+#0 [internal function]: wrapper->stream_eof()
+#1 %s(%d): feof(Resource id #6)
+#2 {main}
+  thrown in %s on line %d

Zend/zend_execute_API.c

@@ -675,6 +675,10 @@ int zend_call_function(zend_fcall_info *fci, zend_fcall_info_cache *fci_cache TS
 		}
 
 		if (fci->object_pp) {
+			if (Z_TYPE_PP(fci->object_pp) == IS_OBJECT
+				&& (!EG(objects_store).object_buckets || !EG(objects_store).object_buckets[Z_OBJ_HANDLE_PP(fci->object_pp)].valid)) {
+				return FAILURE;
+			}
 			/* TBI!! new object handlers */
 			if (Z_TYPE_PP(fci->object_pp) == IS_OBJECT) {
 				if (!IS_ZEND_STD_OBJECT(**fci->object_pp)) {
@@ -839,6 +843,10 @@ int zend_call_function(zend_fcall_info *fci, zend_fcall_info_cache *fci_cache TS
 		calling_scope = fci_cache->calling_scope;
 		fci->object_pp = fci_cache->object_pp;
 		EX(object) = fci->object_pp ? *fci->object_pp : NULL;
+		if (fci->object_pp && Z_TYPE_PP(fci->object_pp) == IS_OBJECT
+			&& (!EG(objects_store).object_buckets || !EG(objects_store).object_buckets[Z_OBJ_HANDLE_PP(fci->object_pp)].valid)) {
+			return FAILURE;
+		}
 	}
 
 	if (EX(function_state).function->common.fn_flags & (ZEND_ACC_ABSTRACT|ZEND_ACC_DEPRECATED)) {