gcc/testsuite/gcc.dg/bf-ms-layout-4.c

   1 /* PR target/52991 */
   2 /* { dg-do compile { target i?86-*-* x86_64-*-* } } */
   3
   4 #define CHECK(expr) extern char c[(expr) ? 1 : -1]
   5 #define offsetof(x, y) __builtin_offsetof (x, y)
   6
   7 struct test_sp1 {
   8     int a;
   9     short b;
  10     int c;
  11     char d;
  12 } __attribute__((packed,ms_struct));
  13
  14 CHECK (sizeof (struct test_sp1) == 11);
  15 CHECK (offsetof (struct test_sp1, a) == 0);
  16 CHECK (offsetof (struct test_sp1, b) == 4);
  17 CHECK (offsetof (struct test_sp1, c) == 6);
  18 CHECK (offsetof (struct test_sp1, d) == 10);
  19
  20 struct test_sp3 {
  21     int a;
  22     short b __attribute__((aligned(8)));
  23     int c;
  24     char d;
  25 } __attribute__((packed,ms_struct));
  26
  27 CHECK (sizeof (struct test_sp3) == 16);
  28 CHECK (offsetof (struct test_sp3, a) == 0);
  29 CHECK (offsetof (struct test_sp3, b) == 8);
  30 CHECK (offsetof (struct test_sp3, c) == 10);
  31 CHECK (offsetof (struct test_sp3, d) == 14);
  32
  33 struct test_s4 {
  34     int a;
  35     short b;
  36     int c:15;
  37     char d;
  38 } __attribute__((ms_struct));
  39
  40 CHECK (sizeof (struct test_s4) == 16);
  41 CHECK (offsetof (struct test_s4, a) == 0);
  42 CHECK (offsetof (struct test_s4, b) == 4);
  43 CHECK (offsetof (struct test_s4, d) == 12);