LU-15492 build: fallthrough macro for pre/post gcc-7

[fs/lustre-release.git] / lustre / utils / gss / gss_util.h

diff --git a/lustre/utils/gss/gss_util.h b/lustre/utils/gss/gss_util.h
index e7cc128..07b0f30 100644 (file)
--- a/lustre/utils/gss/gss_util.h
+++ b/lustre/utils/gss/gss_util.h
@@ -34,6 +34,14 @@
 #include <stdlib.h>
 #include "write_bytes.h"
 
+#ifndef fallthrough
+# if defined(__GNUC__) && __GNUC__ >= 7
+#  define fallthrough  __attribute__((fallthrough)) /* fallthrough */
+# else
+#  define fallthrough do {} while (0)  /* fallthrough */
+# endif
+#endif
+
 extern char *this_realm;
 extern gss_cred_id_t   gssd_creds;