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-rw-r--r--libc/string/strnlen.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/libc/string/strnlen.c b/libc/string/strnlen.c
index 547dd23b2..8fbc25c11 100644
--- a/libc/string/strnlen.c
+++ b/libc/string/strnlen.c
@@ -7,6 +7,8 @@
#include "_string.h"
+#ifdef __USE_GNU
+
#ifdef WANT_WIDE
# define Wstrnlen wcsnlen
#else
@@ -35,3 +37,4 @@ size_t Wstrnlen(const Wchar *s, size_t max)
#undef maxp
libc_hidden_def(Wstrnlen)
+#endif