gcc/testsuite/gcc.dg/bf-ms-attrib.c

   1 /* bf-ms-attrib.c */
   2 /* Adapted from Donn Terry <donnte@microsoft.com> testcase
   3    posted to GCC-patches
   4    http://gcc.gnu.org/ml/gcc-patches/2000-08/msg00577.html */
   5
   6 /* { dg-do run { target *-*-interix* *-*-mingw* *-*-cygwin* } } */
   7
   8 /* We don't want the default "pedantic-errors" in this case, since we're
   9    testing nonstandard stuff to begin with. */
  10 /* { dg-options "-ansi" } */
  11
  12 extern void abort(void);
  13
  14 struct one_gcc {
  15   int d;
  16   unsigned char a;
  17   unsigned short b:7;
  18   char c;
  19 } __attribute__((__gcc_struct__)) ;
  20
  21
  22 struct one_ms {
  23   int d;
  24   unsigned char a;
  25   unsigned short b:7;
  26   char c;
  27 } __attribute__((__ms_struct__));
  28
  29
  30 main()
  31   {
  32     /* As long as the sizes are as expected, we know attributes are working.
  33        bf-ms-layout.c makes sure the right thing happens when the attribute
  34        is on. */
  35     if (sizeof(struct one_ms) != 12)
  36         abort();
  37     if (sizeof(struct one_gcc) != 8)
  38         abort();
  39   }