fix crash if throw attempted outside of executable code

diff --git a/Zend/zend_builtin_functions.c b/Zend/zend_builtin_functions.c
index 591a33613b07bbaea5a950376e17ac238c405aaf..39bbab297288224b81054246ce9369396043c7ca 100644 (file)
--- a/Zend/zend_builtin_functions.c
+++ b/Zend/zend_builtin_functions.c
@@ -1847,7 +1847,7 @@ ZEND_API void zend_fetch_debug_backtrace(zval *return_value, int skip_last TSRML
        ptr = EG(current_execute_data);
 
        /* skip "new Exception()" */
-       if ((skip_last == 0) && ptr->opline && (ptr->opline->opcode == ZEND_NEW)) {
+       if (ptr && (skip_last == 0) && ptr->opline && (ptr->opline->opcode == ZEND_NEW)) {
                ptr = ptr->prev_execute_data;
        }