Index: tests/.expect/attributes.x64.txt
===================================================================
--- tests/.expect/attributes.x64.txt	(revision 0497b6ba3fd2570c5022f91577f43565dbbd1758)
+++ tests/.expect/attributes.x64.txt	(revision 9a01745e06266b363221bee8eedb6c563702cf33)
@@ -1339,4 +1339,5 @@
 __attribute__ (( noreturn )) void _X4fredFv___1(void){
     __attribute__ ((unused)) signed int _X1ii_2;
+    __attribute__ ((gnu::xxx)) signed int _X1ji_2;
     switch ( 3 ) {
         case 2:
Index: tests/attributes.cfa
===================================================================
--- tests/attributes.cfa	(revision 0497b6ba3fd2570c5022f91577f43565dbbd1758)
+++ tests/attributes.cfa	(revision 9a01745e06266b363221bee8eedb6c563702cf33)
@@ -10,6 +10,6 @@
 // Created On       : Mon Feb  6 16:07:02 2017
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Sun Dec 15 17:45:39 2024
-// Update Count     : 49
+// Last Modified On : Mon Dec 16 14:45:04 2024
+// Update Count     : 51
 // 
 
@@ -164,4 +164,5 @@
 [[ noreturn ]] void fred() {
 	int [[unused]] i;
+	int [[gnu::xxx]] j;
 	switch ( 3 ) {
 	  case 2: