Add suppression

include/gsl/span

@@ -63,6 +63,12 @@
 #pragma GCC diagnostic ignored "-Wsign-conversion"
 #endif
 
+// Turn off clang unsafe buffer warnings as all accessed are guarded by runtime checks
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunsafe-buffer-usage"
+#endif // defined(__clang__)
+
 namespace gsl
 {