Make io_data_t pure virtual, its constructor protected

1 files changed, 1 insertions, 1 deletions

diff --git a/io.cpp b/io.cpp
index 4ec1d2bf..14c48e1b 100644
--- a/io.cpp
+++ b/io.cpp
@@ -51,7 +51,7 @@ Utilities for io redirection.
 #include "io.h"
 
 
-void io_data_t::print() const
+io_data_t::~io_data_t()
 {
 }