gcc/testsuite/gcc.target/aarch64/spellcheck_2.c

/* { dg-do compile } */

__attribute__((target ("cpu=cortex-a57-typo"))) void
foo ()
{
  /* { dg-message "valid arguments are: \[^\n\r]*; did you mean 'cortex-a57'?"  "" { target *-*-* } .-1 } */
  /* { dg-error "invalid name \\(\"cortex-a57-typo\"\\) in 'target\\(\"cpu=\"\\)' pragma or attribute"  "" { target *-*-* } .-2 } */
  /* { dg-error "pragma or attribute 'target\\(\"cpu=cortex-a57-typo\"\\)' is not valid"  "" { target *-*-* } .-3 } */
}