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-rw-r--r--src/multibyte/wctob.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/multibyte/wctob.c b/src/multibyte/wctob.c
index d6353ee1..4aeda6a1 100644
--- a/src/multibyte/wctob.c
+++ b/src/multibyte/wctob.c
@@ -1,8 +1,10 @@
-#include <stdio.h>
#include <wchar.h>
+#include <stdlib.h>
+#include "internal.h"
int wctob(wint_t c)
{
if (c < 128U) return c;
+ if (MB_CUR_MAX==1 && IS_CODEUNIT(c)) return (unsigned char)c;
return EOF;
}