Fixed possible crash

diff --git a/ext/opcache/Optimizer/zend_call_graph.c b/ext/opcache/Optimizer/zend_call_graph.c
index f245d14eaad15909f5c03c62b29a6e0a0c7631ba..c7bc7b2e3ec7fefaaa627a68961c2fd65e68a84d 100644 (file)
--- a/ext/opcache/Optimizer/zend_call_graph.c
+++ b/ext/opcache/Optimizer/zend_call_graph.c
@@ -170,7 +170,7 @@ static int zend_analyze_calls(zend_arena **arena, zend_script *script, uint32_t
                                                call_info->next_caller = NULL;
                                        } else {
                                                zend_func_info *callee_func_info = ZEND_FUNC_INFO(&func->op_array);
-                                               call_info->next_caller = callee_func_info->caller_info;
+                                               call_info->next_caller = callee_func_info ? callee_func_info->caller_info : NULL;
                                        }
                                }
                                /* break missing intentionally */