fix for 28213.

class_name and call_type should be reinitialized on every loop iter.

diff --git a/Zend/zend_builtin_functions.c b/Zend/zend_builtin_functions.c
index 02f5d49e7a54d96073a7221b0c269e1368498deb..eb6729145396720360b3a796e9606c8ba05d3f77 100644 (file)
--- a/Zend/zend_builtin_functions.c
+++ b/Zend/zend_builtin_functions.c
@@ -1484,6 +1484,7 @@ ZEND_FUNCTION(debug_print_backtrace)
        array_init(return_value);
 
        while (ptr) {
+               class_name = call_type = NULL;   
                if (ptr->op_array) {
                        filename = ptr->op_array->filename;
                        lineno = ptr->opline->lineno;