1 files changed, 8 insertions, 0 deletions
diff --git a/src/ctype/isupper.c b/src/ctype/isupper.c
index f09d88c5..68c36f4a 100644
--- a/src/ctype/isupper.c
+++ b/src/ctype/isupper.c
@@ -1,7 +1,15 @@
 #include <ctype.h>
+#include "libc.h"
 #undef isupper
 
 int isupper(int c)
 {
 	return (unsigned)c-'A' < 26;
 }
+
+int __isupper_l(int c, locale_t l)
+{
+	return isupper(c);
+}
+
+weak_alias(__isupper_l, isupper_l);