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-rw-r--r--src/string.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/src/string.c b/src/string.c
index 4189d84d0..a9351619b 100644
--- a/src/string.c
+++ b/src/string.c
@@ -2769,9 +2769,6 @@ mrb_init_string(mrb_state *mrb)
#include <ctype.h>
#include <errno.h>
-#ifndef errno
-extern int errno;
-#endif
#ifndef __STDC__
# ifdef __GNUC__