#define __NR_membarrier 283
#endif
+/*
+ * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63293
+ *
+ * Backported in RHEL7 gcc 4.8.5-11
+ */
+#if defined(URCU_GCC_VERSION) && defined(__GNUC_RH_RELEASE__)
+# if (URCU_GCC_VERSION == 40805) && (__GNUC_RH_RELEASE__ >= 11)
+# define URCU_GCC_PATCHED_63293
+# endif
+#endif
+
+#ifdef URCU_GCC_VERSION
+# if URCU_GCC_VERSION < 50100 && !defined(URCU_GCC_PATCHED_63293)
+# error Your gcc version performs unsafe access to deallocated stack
+# endif
+#endif
+
+#define caa_cpu_relax() __asm__ __volatile__ ("yield" : : : "memory")
+
#ifdef __cplusplus
}
#endif