gcc/testsuite/g++.old-deja/g++.law/bit-fields2.C

   1 // { dg-do run  }
   2 // GROUPS passed bit-fields
   3 // bitfield file
   4 // Message-Id: <92Oct29.191913est.62@jarvis.csri.toronto.edu>
   5 // From: mdivax1!robinson@ai.mit.edu (Jim Robinson)
   6 // Subject: gcc 2.2.2 C++ bug in handling :0 bit fields
   7 // Date:   Thu, 29 Oct 1992 19:18:28 -0500
   8 //
   9 // Also applies to:
  10 // bitfield file
  11 // From: Jaimie Wilson/MSL <Jaimie_Wilson@msl.isis.org>
  12 // Date:   Fri, 28 Jan 1994 06:11:43 -0500
  13 // Subject: GCC bug report
  14 //
  15 // This test is only meant for targets where EMPTY_FIELD_BOUNDARY is
  16 // defined to no larger than the size of an unsigned int, or where
  17 // PCC_BITFIELD_TYPE_MATTERS is defined.  Add skips below for targets that
  18 // do not have that property.
  19 // { dg-skip-if "" { mmix-knuth-mmixware } { "*" } { "" } }
  20
  21
  22 #include <stdio.h>
  23 #include <stddef.h>
  24
  25 struct foo {
  26         char a;
  27         char b;
  28         unsigned int : 0;       /* force word alignment */
  29         char c;
  30 };
  31
  32 int
  33 main(int argc, char **argv)
  34 {
  35         struct foo bar;
  36
  37         if (offsetof (struct foo, c) > sizeof (unsigned int))
  38                 { printf ("FAIL\n"); return 1; }
  39         else
  40                 printf ("PASS\n");
  41         return 0;
  42 }
  43