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 15 16 /* { dg-error "not valid at the start of an identifier" } */
17 A18