Permit chained unary operators

The operand of a unary may be yet another unary.  This is useful for
things like boolean normalization, !!x.

* parse.cxx (parser::parse_unary): Recurse the operand.
* testsuite/parseok/eleven.stp: Add chained unary operators.

1 files changed, 1 insertions, 1 deletions

diff --git a/parse.cxx b/parse.cxx
index b2daa178..9d32a8cb 100644
--- a/parse.cxx
+++ b/parse.cxx
@@ -2289,7 +2289,7 @@ parser::parse_unary ()
       e->op = t->content;
       e->tok = t;
       next ();
-      e->operand = parse_crement ();
+      e->operand = parse_unary ();
       return e;
     }
   else