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-rw-r--r--lib/libspl/include/sys/feature_tests.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/libspl/include/sys/feature_tests.h b/lib/libspl/include/sys/feature_tests.h
index a36fd7b8c..c9564b2c3 100644
--- a/lib/libspl/include/sys/feature_tests.h
+++ b/lib/libspl/include/sys/feature_tests.h
@@ -30,7 +30,7 @@
#define ____cacheline_aligned
#define __NORETURN __attribute__((__noreturn__))
-#if !defined(fallthrough)
+#if !defined(fallthrough) && !defined(_LIBCPP_VERSION)
#if defined(HAVE_IMPLICIT_FALLTHROUGH)
#define fallthrough __attribute__((__fallthrough__))
#else