1 files changed, 6 insertions, 2 deletions
diff --git a/lib/libc/ctype/isblank.c b/lib/libc/ctype/isblank.c
index c4dacfb2..dfe9472c 100644
--- a/lib/libc/ctype/isblank.c
+++ b/lib/libc/ctype/isblank.c
@@ -1,8 +1,12 @@
-#include <libc.h> // for weak_reference
+#include <ctype.h>     // for isblank, isblank_l, locale_t
+#include <sys/cdefs.h> // for __unused, __weak
 
 int isblank(int c)
 {
 	return (c == ' ' || c == '\t');
 }
 
-weak_reference(isblank, isblank_l);
+__weak int isblank_l(int c, locale_t __unused locale)
+{
+	return isblank(c);
+}