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-rw-r--r--manual/examples/mbstouwcs.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/manual/examples/mbstouwcs.c b/manual/examples/mbstouwcs.c
index c94e1fa..c492f37 100644
--- a/manual/examples/mbstouwcs.c
+++ b/manual/examples/mbstouwcs.c
@@ -1,7 +1,9 @@
+#include <errno.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
+#include <wctype.h>
/* Do not include the above headers in the example.
*/