/* Regression test for bug with macro expansion on #if lines -   exposed by glibc.  *//* { dg-do compile } */# define SHLIB_COMPAT(lib, introduced, obsoleted) \  (!(ABI_##lib##_##obsoleted - 0) \   || ((ABI_##lib##_##introduced - 0) < (ABI_##lib##_##obsoleted - 0)))#if 0bad#elif SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)int#endifx;