Index: expr.c
===================================================================
--- expr.c.orig
+++ expr.c
@@ -410,8 +410,8 @@ expassign ()
   value = expcond ();
   if (curtok == EQ || curtok == OP_ASSIGN)
     {
-      int special, op;
-      intmax_t lvalue;
+      int special, op = -1;
+      intmax_t lvalue = 0;
 
       special = curtok == OP_ASSIGN;