clang/test/Sema/pragma-pack-5.c

   1 // RUN: %clang_cc1 -triple x86_64-apple-darwin9 %s -fsyntax-only -verify -ffreestanding
   2 // expected-no-diagnostics
   3 // <rdar://problem/10494810> and PR9560
   4 // Check #pragma pack handling with bitfields.
   5
   6 #include <stddef.h>
   7 #pragma pack(2)
   8
   9 struct s0 {
  10      char        f1;
  11      unsigned    f2 : 32;
  12      char        f3;
  13 };
  14 extern int check[sizeof(struct s0) == 6 ? 1 : -1];
  15
  16 struct s1 {
  17      char        f1;
  18      unsigned       : 0;
  19      char        f3;
  20 };
  21 extern int check[sizeof(struct s1) == 5 ? 1 : -1];
  22
  23 struct s2 {
  24      char        f1;
  25      unsigned       : 0;
  26      unsigned    f3 : 8;
  27      char        f4;
  28 };
  29 extern int check[sizeof(struct s2) == 6 ? 1 : -1];
  30
  31 struct s3 {
  32      char        f1;
  33      unsigned       : 0;
  34      unsigned    f3 : 16;
  35      char        f4;
  36 };
  37 extern int check[sizeof(struct s3) == 8 ? 1 : -1];
  38 extern int check[offsetof(struct s3, f4) == 6 ? 1 : -1];
  39
  40 struct s4 {
  41      char        f1;
  42      unsigned    f2 : 8;
  43      char        f3;
  44 };
  45 extern int check[sizeof(struct s4) == 4 ? 1 : -1];
  46 extern int check[offsetof(struct s4, f3) == 2 ? 1 : -1];