| /* Test for constant expressions: __builtin_offsetof allowed in |
| integer constant expressions but not traditional offsetof |
| expansion. */ |
| /* Origin: Joseph Myers <joseph@codesourcery.com> */ |
| /* { dg-do compile } */ |
| /* { dg-options "-std=iso9899:1999 -pedantic-errors -ftrack-macro-expansion=0" } */ |
| |
| struct s { |
| int a; |
| }; |
| |
| struct t { |
| struct s a; |
| int b[2]; |
| }; |
| |
| #define old_offsetof(TYPE, MEMBER) ((__SIZE_TYPE__)(__UINTPTR_TYPE__) &((TYPE *)0)->MEMBER) |
| |
| enum e { |
| E1 = old_offsetof (struct s, a), /* { dg-error "constant" } */ |
| E2 = old_offsetof (struct t, a.a), /* { dg-error "constant" } */ |
| E3 = old_offsetof (struct t, b[1]), /* { dg-error "constant" } */ |
| E4 = __builtin_offsetof (struct s, a), |
| E5 = __builtin_offsetof (struct t, a.a), |
| E6 = __builtin_offsetof (struct t, b[1]) |
| }; |
