offsetof.c revision 5a1deb8d9c0722beae28d693fa137bbb942bd11f
1// RUN: clang -fsyntax-only -verify %s 2 3#define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER) 4 5typedef struct P { int i; float f; } PT; 6struct external_sun3_core 7{ 8 unsigned c_regs; 9 10 PT X[100]; 11 12}; 13 14void swap() 15{ 16 int x; 17 x = offsetof(struct external_sun3_core, c_regs); 18 x = __builtin_offsetof(struct external_sun3_core, X[42].f); 19 20 x = __builtin_offsetof(struct external_sun3_core, X[42].f2); // expected-error {{no member named 'f2'}} 21 x = __builtin_offsetof(int, X[42].f2); // expected-error {{offsetof requires struct}} 22 23 int a[__builtin_offsetof(struct external_sun3_core, X) == 4 ? 1 : -1]; 24 int b[__builtin_offsetof(struct external_sun3_core, X[42]) == 340 ? 1 : -1]; 25 int c[__builtin_offsetof(struct external_sun3_core, X[42].f2) == 344 ? 1 : -1]; 26} 27 28