Add const to newver_t operator()

A certain set of compilers gives a compiler error due to losing
"const-volatile qualifiers"

diff --git a/re2c/src/dfa/closure.h b/re2c/src/dfa/closure.h
index f93e29d5b56d499661607e8fa2344c12a5d2db97..cd8e127832d81774f2d775f43b4a6045d8d4901d 100644 (file)
--- a/re2c/src/dfa/closure.h
+++ b/re2c/src/dfa/closure.h
@@ -38,7 +38,7 @@ struct newver_t
 struct newver_cmp_t
 {
        tagtree_t &history;
-       bool operator()(const newver_t &x, const newver_t &y)
+       bool operator()(const newver_t &x, const newver_t &y) const
        {
                if (x.tag < y.tag) return true;
                if (x.tag > y.tag) return false;