| /* | |
| * { dg-do compile } | |
| * { dg-options "-std=c23" } | |
| */ | |
| // conflicting types for anonymous structs / unions | |
| extern struct { int x; } a; | |
| extern struct { int x; } a; /* { dg-error "conflicting types" } */ | |
| extern union { int x; } b; | |
| extern union { int x; } b; /* { dg-error "conflicting types" } */ | |
| typedef struct { int x; } u; | |
| typedef struct { int x; } v; | |
| u c; | |
| v c; /* { dg-error "conflicting types" } */ | |
| typedef union { int x; } q; | |
| typedef union { int x; } r; | |
| q d; | |
| r d; /* { dg-error "conflicting types" } */ | |