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-rw-r--r--lib/libc/amd64/string/Makefile.inc6
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/libc/amd64/string/Makefile.inc b/lib/libc/amd64/string/Makefile.inc
index b1369841bc74..d5bb646c5c53 100644
--- a/lib/libc/amd64/string/Makefile.inc
+++ b/lib/libc/amd64/string/Makefile.inc
@@ -28,3 +28,9 @@ MDSRCS+= \
strspn.S \
timingsafe_bcmp.S \
timingsafe_memcmp.S
+
+.if ${MK_ASAN} != "no"
+# Disable ASAN for amd64_archlevel.c since its code is executed before the
+# sanitizer runtime can initialize itself.
+CFLAGS.amd64_archlevel.c+= -fno-sanitize=address
+.endif