-LTTNG_HIDDEN
-extern unsigned int lttng_ust_lfht_fls_ulong(unsigned long x);
-LTTNG_HIDDEN
-extern int lttng_ust_lfht_get_count_order_u32(uint32_t x);
-LTTNG_HIDDEN
-extern int lttng_ust_lfht_get_count_order_ulong(unsigned long x);
+extern unsigned int lttng_ust_lfht_fls_ulong(unsigned long x)
+ __attribute__((visibility("hidden")));
+
+extern int lttng_ust_lfht_get_count_order_u32(uint32_t x)
+ __attribute__((visibility("hidden")));
+
+extern int lttng_ust_lfht_get_count_order_ulong(unsigned long x)
+ __attribute__((visibility("hidden")));