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-rw-r--r--src/variable.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/variable.c b/src/variable.c
index 5c3c493d8..9804ab2ef 100644
--- a/src/variable.c
+++ b/src/variable.c
@@ -4,6 +4,7 @@
** See Copyright Notice in mruby.h
*/
+#include <stdio.h>
#include "mruby.h"
#include "mruby/class.h"
#include "ritehash.h"