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diff --git a/sys/libkern/strlen.c b/sys/libkern/strlen.c
--- a/sys/libkern/strlen.c
+++ b/sys/libkern/strlen.c
@@ -26,9 +26,19 @@
*/
#include <sys/cdefs.h>
+#include <sys/asan.h>
+#include <sys/csan.h>
#include <sys/libkern.h>
#include <sys/limits.h>
+#include <sys/msan.h>
+#if defined(KASAN) || defined(KCSAN) || defined(KMSAN)
+size_t
+(strlen)(const char *str)
+{
+ return SAN_INTERCEPTOR(strlen)(str);
+}
+#else /* !KASAN && !KCSAN && !KMSAN */
/*
* Portable strlen() for 32-bit and 64-bit systems.
*
@@ -119,3 +129,4 @@
/* NOTREACHED */
return (0);
}
+#endif /* KASAN || KCSAN || KMSAN */

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