1 /* { dg-do preprocess } */ 2 /* { dg-options "-std=c99" } */ 3 4 ª 5 « /* not a preprocessing error because we lex it into its own token */ 6 ¶ /* not a preprocessing error because we lex it into its own token */ 7 º 8 À 9 Ö 10 ΄ 11 12 ٩ /* { dg-error "not valid at the start of an identifier" } */ 13 A٩ 14 0º 15 0٩ 16 ๙ /* { dg-error "not valid at the start of an identifier" } */ 17 A๙ 18