fix_conversion.patch

diff --git a/Zend/zend_API.h b/Zend/zend_API.h
index 4f12834..8094dda 100644
--- a/Zend/zend_API.h
+++ b/Zend/zend_API.h
@@ -1189,12 +1189,10 @@ static zend_always_inline int zend_parse_arg_str(zval *arg, zend_string **dest,
                if (check_null && UNEXPECTED(Z_TYPE_P(arg) == IS_NULL)) {
                        *dest = NULL;
                } else {
-                       if (Z_COPYABLE_P(arg) && Z_REFCOUNT_P(arg) > 1) {
-                               Z_DELREF_P(arg);
-                               zval_copy_ctor_func(arg);
-                       }
-                       convert_to_string(arg);
-                       *dest = Z_STR_P(arg);
+                       zval converted;
+                       ZVAL_COPY_VALUE(&converted, arg);
+                       convert_to_string(&converted);
+                       *dest = Z_STR(converted);
                }
        } else if (UNEXPECTED(Z_TYPE_P(arg) != IS_OBJECT) ||
                   UNEXPECTED(parse_arg_object_to_str(arg, dest, IS_STRING) != SUCCESS)) {

looks good!

I'm not the one best placed to review this. @dstogov ?

Oh, I can't ping people on Gist. Guess I'll have to make a pull request.