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-rw-r--r--boost/regex/concepts.hpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/boost/regex/concepts.hpp b/boost/regex/concepts.hpp
index f3ca53d464..e974d69912 100644
--- a/boost/regex/concepts.hpp
+++ b/boost/regex/concepts.hpp
@@ -63,6 +63,8 @@ struct char_architype
// conversion to integral type:
operator long()const;
};
+inline long hash_value(char_architype val)
+{ return val; }
//
// char_architype can not be used with basic_string:
//