From 4d1ee7c21e08011d6f2ac8b9f258a2807f7c3feb Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Thu, 3 Jun 2021 12:56:44 +1000
Subject: [PATCH] io: ensure override is used on overridden members

---
 io.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/io.hpp b/io.hpp
index ee727c91..dedfc514 100644
--- a/io.hpp
+++ b/io.hpp
@@ -220,7 +220,7 @@ namespace cruft {
 
     class stream_error : public std::exception {
     public:
-        virtual const char* what (void) const noexcept
+        const char* what (void) const noexcept override
         { return "error on C stream"; }
     };
 }