Added entry on UPGRADING

diff --git a/UPGRADING b/UPGRADING
index 3565c28a965915bff0c88629f59bbf3a6947aa9c..7413f7b2d1a3e39ac7df8cd0c65fff5a3f0b1b01 100644 (file)
--- a/UPGRADING
+++ b/UPGRADING
@@ -58,6 +58,8 @@ Core:
   . Array destructuring now supports reference assignments using the syntax
     [&$a, [$b, &$c]] = $d. The same is also supported for list().
     (RFC: https://wiki.php.net/rfc/list_reference_assignment)
+  . instancof now allows literal as the first operand,
+    in this case the result always be FALSE.
 
 BCMath:
   . bcscale() can now also be used as getter to retrieve the current scale in use.