3 files changed, 9 insertions, 5 deletions

diff --git a/src/lib/libc/include/namespace.h b/src/lib/libc/include/namespace.h
index cc83735b90..9058230429 100644
--- a/src/lib/libc/include/namespace.h
+++ b/src/lib/libc/include/namespace.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: namespace.h,v 1.17 2025/10/23 19:06:10 miod Exp $     */
+/*      $OpenBSD: namespace.h,v 1.18 2026/06/30 19:18:53 kettenis Exp $ */
 
 #ifndef _LIBC_NAMESPACE_H_
 #define _LIBC_NAMESPACE_H_
@@ -85,11 +85,15 @@
 BUILTIN void    *memmove(void *, const void *, __size_t);
 BUILTIN void    *memcpy(void *__restrict, const void *__restrict, __size_t);
 BUILTIN void    *memset(void *, int, __size_t);
+BUILTIN __size_t strlen(const char *);
+BUILTIN __size_t wcslen(const __wchar_t *);
 BUILTIN void    __stack_smash_handler(const char [], int __unused);
 #if !defined(__clang__)
 PROTO_NORMAL(memmove);
 PROTO_NORMAL(memcpy);
 PROTO_NORMAL(memset);
+PROTO_NORMAL(strlen);
+PROTO_NORMAL(wcslen);
 PROTO_NORMAL(__stack_smash_handler);
 #endif
 #undef  BUILTIN
diff --git a/src/lib/libc/string/strlen.c b/src/lib/libc/string/strlen.c
index a5721d3e7f..cf3cd8cf86 100644
--- a/src/lib/libc/string/strlen.c
+++ b/src/lib/libc/string/strlen.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: strlen.c,v 1.9 2015/08/31 02:53:57 guenther Exp $     */
+/*      $OpenBSD: strlen.c,v 1.10 2026/06/30 19:18:54 kettenis Exp $    */
 
 /*-
  * Copyright (c) 1990, 1993
@@ -41,4 +41,4 @@ strlen(const char *str)
         return (s - str);
 }
 
-DEF_STRONG(strlen);
+DEF_BUILTIN(strlen);
diff --git a/src/lib/libc/string/wcslen.c b/src/lib/libc/string/wcslen.c
index 16d4bba128..937d352e31 100644
--- a/src/lib/libc/string/wcslen.c
+++ b/src/lib/libc/string/wcslen.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: wcslen.c,v 1.4 2015/09/12 16:23:14 guenther Exp $     */
+/*      $OpenBSD: wcslen.c,v 1.5 2026/06/30 19:18:54 kettenis Exp $     */
 /*      $NetBSD: wcslen.c,v 1.2 2001/01/03 14:29:36 lukem Exp $ */
 
 /*-
@@ -42,4 +42,4 @@ wcslen(const wchar_t *s)
 
         return p - s;
 }
-DEF_STRONG(wcslen);
+DEF_BUILTIN(wcslen);