Eliminate process running requirement of dump_bt in .gdbinit

Most of the time scope are avaible, but if not, it will be hard to get them,
since we can't call function if no proccess running. try to get class name
if we can.

Author: reeze

.gdbinit

@@ -47,23 +47,34 @@ define dump_bt
 					if $fst.function.common.scope
 						printf "%s->", $fst.function.common.scope->name
 					else
-						____executor_globals
-						set $class_name_ptr = (char **)malloc(sizeof(char **))
-						set $class_name_len = (int *)malloc(sizeof(int *))
-
-						if basic_functions_module.zts
-							set $dup = zend_get_object_classname($t->object, $class_name_ptr, $class_name_len, $tsrm_ls)
-						else
-							set $dup = zend_get_object_classname($t->object, $class_name_ptr, $class_name_len)
+						if !$eg && !basic_functions_module.zts
+							____executor_globals
 						end
 
-						printf "%s->", *$class_name_ptr
+						set $known_class = 0
+						if $eg
+							set $handle = $t->object.value.obj.handle
+							set $handlers = $t->object.value.obj.handlers
+							set $zobj = (zend_object *)$eg.objects_store.object_buckets[$handle].bucket.obj.object
+
+							if $handlers->get_class_entry == &zend_std_object_get_class
+								set $known_class = 1
+
+								if $handlers.get_class_name
+									if $handlers.get_class_name != &zend_std_object_get_class_name
+										set $known_class = 0
+									end
+								end
+
+								if $known_class
+									printf "%s->", $zobj->ce.name
+								end
+							end
+						end
 
-						if !$dup
-							call _efree(*$class_name_ptr, "[GDB]", 0, "", 0)
+						if !$known_class
+							printf "Unknow->"
 						end
-						call (void) free($class_name_ptr)
-						call (void) free($class_name_len)
 					end
 				else
 					if $fst.function.common.scope