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-rw-r--r--mrbgems/mruby-io/src/io.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/mrbgems/mruby-io/src/io.c b/mrbgems/mruby-io/src/io.c
index f17407ff6..fc81f57cc 100644
--- a/mrbgems/mruby-io/src/io.c
+++ b/mrbgems/mruby-io/src/io.c
@@ -26,6 +26,7 @@
#define open _open
#define close _close
#define dup _dup
+ #define dup2 _dup2
#define read _read
#define write _write
#define lseek _lseek