1*1f5207b7SJohn Levon static int foo(void) __attribute__((unknown_attribute));
2*1f5207b7SJohn Levon 
3*1f5207b7SJohn Levon /*
4*1f5207b7SJohn Levon  * check-name: warn-unknown-attribute
5*1f5207b7SJohn Levon  */
6