1 /* PR c/20043 */
2 /* { dg-do compile } */
3 /* { dg-options "-std=gnu99" } */
4 
5 typedef union { int *i; long *l; } U
6   __attribute__((transparent_union));
7 
8 extern void f0 (U);		/* { dg-message "note: previous declaration" } */
9 extern void f0 (void *);	/* { dg-error "conflicting types" } */
10 
11 extern void f1 (U);		/* { dg-message "note: previous declaration" } */
12 extern void f1 (unsigned long);	/* { dg-error "conflicting types" } */
13 
14 extern void f2 (void *);	/* { dg-message "note: previous declaration" } */
15 extern void f2 (U);		/* { dg-error "conflicting types" } */
16 
17 extern void f3 (unsigned long);	/* { dg-message "note: previous declaration" } */
18 extern void f3 (U);		/* { dg-error "conflicting types" } */
19