|  | /* Copyright (C) 2004-2016 Free Software Foundation, Inc. | 
|  | This file is part of the GNU C Library. | 
|  |  | 
|  | The GNU C Library is free software; you can redistribute it and/or | 
|  | modify it under the terms of the GNU Lesser General Public | 
|  | License as published by the Free Software Foundation; either | 
|  | version 2.1 of the License, or (at your option) any later version. | 
|  |  | 
|  | The GNU C Library is distributed in the hope that it will be useful, | 
|  | but WITHOUT ANY WARRANTY; without even the implied warranty of | 
|  | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU | 
|  | Lesser General Public License for more details. | 
|  |  | 
|  | You should have received a copy of the GNU Lesser General Public | 
|  | License along with the GNU C Library; if not, see | 
|  | <http://www.gnu.org/licenses/>.  */ | 
|  |  | 
|  | #include <stdio.h> | 
|  | #include <stdint.h> | 
|  |  | 
|  | typedef struct { int i[4]; } int_al16 __attribute__((aligned (16))); | 
|  |  | 
|  | #define TEST_STACK_ALIGN() \ | 
|  | ({									     \ | 
|  | int_al16 _m;							     \ | 
|  | double _d = 12.0;							     \ | 
|  | long double _ld = 15.0;						     \ | 
|  | int _ret = 0;							     \ | 
|  | printf ("int_al16:  %p %zu\n", &_m, __alignof (int_al16));		     \ | 
|  | if ((((uintptr_t) &_m) & (__alignof (int_al16) - 1)) != 0)		     \ | 
|  | _ret = 1;								     \ | 
|  | \ | 
|  | printf ("double:  %g %p %zu\n", _d, &_d, __alignof (double));	     \ | 
|  | if ((((uintptr_t) &_d) & (__alignof (double) - 1)) != 0)		     \ | 
|  | _ret = 1;								     \ | 
|  | \ | 
|  | printf ("ldouble: %Lg %p %zu\n", _ld, &_ld, __alignof (long double));    \ | 
|  | if ((((uintptr_t) &_ld) & (__alignof (long double) - 1)) != 0)	     \ | 
|  | _ret = 1;								     \ | 
|  | _ret;								     \ | 
|  | }) |