--- /dev/null
+UVS isset() on temporaries
+-----
+<?php
+
+isset(([0, 1] + [])[0]);
+isset(['a' => 'b']->a);
+isset("str"->a);
+-----
+!!php7
+array(
+ 0: Expr_Isset(
+ vars: array(
+ 0: Expr_ArrayDimFetch(
+ var: Expr_BinaryOp_Plus(
+ left: Expr_Array(
+ items: array(
+ 0: Expr_ArrayItem(
+ key: null
+ value: Scalar_LNumber(
+ value: 0
+ )
+ byRef: false
+ )
+ 1: Expr_ArrayItem(
+ key: null
+ value: Scalar_LNumber(
+ value: 1
+ )
+ byRef: false
+ )
+ )
+ )
+ right: Expr_Array(
+ items: array(
+ )
+ )
+ )
+ dim: Scalar_LNumber(
+ value: 0
+ )
+ )
+ )
+ )
+ 1: Expr_Isset(
+ vars: array(
+ 0: Expr_PropertyFetch(
+ var: Expr_Array(
+ items: array(
+ 0: Expr_ArrayItem(
+ key: Scalar_String(
+ value: a
+ )
+ value: Scalar_String(
+ value: b
+ )
+ byRef: false
+ )
+ )
+ )
+ name: a
+ )
+ )
+ )
+ 2: Expr_Isset(
+ vars: array(
+ 0: Expr_PropertyFetch(
+ var: Scalar_String(
+ value: str
+ )
+ name: a
+ )
+ )
+ )
+)