gcc/testsuite/gcc.target/i386/pr102024.c

/* PR target/102024 */
/* { dg-do compile } */

struct S { float a; int : 0; float b; };
void foo (struct S x);

void
bar (void)
{
  struct S s = { 0.0f, 0.0f };
  foo (s);	/* { dg-message "the ABI of passing C structures with zero-width bit-fields has changed in GCC 12.1" "" { target { ! ia32 } } } */
}