1 /* Test of <alignof.h>. 2 Copyright (C) 2009-2018 Free Software Foundation, Inc. 3 4 This program is free software: you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 3 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 16 17 /* Written by Bruno Haible <bruno@clisp.org>, 2009. */ 18 19 #include <config.h> 20 21 #include <alignof.h> 22 23 #include <stddef.h> 24 #include <stdint.h> 25 26 #include "verify.h" 27 28 typedef long double longdouble; 29 typedef struct { char a[1]; } struct1; 30 typedef struct { char a[2]; } struct2; 31 typedef struct { char a[3]; } struct3; 32 typedef struct { char a[4]; } struct4; 33 34 #define CHECK(type) \ 35 typedef struct { char slot1; type slot2; } type##_helper; \ 36 verify (alignof_slot (type) == offsetof (type##_helper, slot2)); \ 37 const int type##_slot_alignment = alignof_slot (type); \ 38 const int type##_type_alignment = alignof_type (type); 39 40 CHECK (char) CHECK(short)41CHECK (short) 42 CHECK (int) 43 CHECK (long) 44 CHECK (float) 45 CHECK (double) 46 CHECK (longdouble) 47 #ifdef INT64_MAX 48 CHECK (int64_t) 49 #endif 50 CHECK (struct1) 51 CHECK (struct2) 52 CHECK (struct3) 53 CHECK (struct4) 54 55 int 56 main () 57 { 58 return 0; 59 } 60