gcc-4.9/gcc/testsuite/gcc.dg/bitfld-18.c


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/* { dg-do compile } */
/* { dg-options "-Wno-packed-bitfield-compat" } */
/* { dg-options "-Wno-packed-bitfield-compat -mno-ms-bitfields" { target { i?86-*-mingw* x86_64-*-mingw* } } } */

struct t
{
  char a:4;
  char b:8 __attribute__ ((packed));
  char c:4;
};

int assrt[sizeof (struct t) == 2 ? 1 : -1];