1 files changed, 6 insertions, 2 deletions
diff --git a/lib/libc/ctype/iscntrl.c b/lib/libc/ctype/iscntrl.c
index c25773b6..53b8616a 100644
--- a/lib/libc/ctype/iscntrl.c
+++ b/lib/libc/ctype/iscntrl.c
@@ -1,8 +1,12 @@
-#include <libc.h> // for weak_reference
+#include <ctype.h>     // for iscntrl, iscntrl_l, locale_t
+#include <sys/cdefs.h> // for __unused, __weak
 
 int iscntrl(int c)
 {
 	return (unsigned)c < 0x20 || c == 0x7f;
 }
 
-weak_reference(iscntrl, iscntrl_l);
+__weak int iscntrl_l(int c, locale_t __unused locale)
+{
+	return iscntrl(c);
+}