gcc/testsuite/gcc.dg/spellcheck-params-2.c - gcc - Git at Google

 /* { dg-do compile } */
 /* { dg-options "--param does-not-resemble-anything=42" } */
 /* { dg-error "unrecognized command-line option '--param=does-not-resemble-anything=42'"  "" { target *-*-* } 0 } */
	/* { dg-do compile } */
	/* { dg-options "--param does-not-resemble-anything=42" } */
	/* { dg-error "unrecognized command-line option '--param=does-not-resemble-anything=42'" "" { target --* } 0 } */