clang/test/CodeGen/ms_struct-bitfield-init.c

   1 // RUN: %clang_cc1 -emit-llvm-only  -triple x86_64-apple-darwin9 %s
   2
   3 extern void abort(void);
   4 #define ATTR __attribute__((__ms_struct__))
   5
   6 struct
   7 {
   8    char foo;
   9    long : 0;
  10    char : 0;
  11    int : 0;
  12    char bar;
  13 } ATTR t1 = {'a', 'b'};
  14
  15 struct
  16 {
  17    char bar0;
  18    long : 0;
  19    int : 0;
  20    char bar1;
  21    char bar2;
  22    long : 0;
  23    char bar3;
  24    char bar4;
  25    char : 0;
  26    char bar5;
  27    char bar6;
  28    char : 0;
  29    char bar7;
  30    char bar8;
  31 } ATTR t2 = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i'};
  32
  33 struct {
  34   int : 0;
  35   int i1;
  36   int : 0;
  37   int i2;
  38   int : 0;
  39   int i3;
  40   int : 0;
  41   int i4;
  42 } t3 = {1,2,3,4};
  43
  44 int main(void) {
  45   if (sizeof(t1) != 2)
  46     abort();
  47   if (t1.foo != 'a')
  48     abort();
  49   if (t1.bar != 'b')
  50     abort();
  51   t1.foo = 'c';
  52   t1.bar = 'd';
  53   if (t1.foo != 'c')
  54     abort();
  55   if (t1.bar != 'd')
  56     abort();
  57   if (sizeof(t2) != 9)
  58     abort();
  59   if (t2.bar0 != 'a' || t2.bar8 != 'i')
  60     abort();
  61   if (sizeof(t3) != 16)
  62     abort();
  63   if (t3.i1 != 1 || t3.i4 != 4)
  64     abort();
  65   return 0;
  66 }
  67