LCOV - code coverage report
Current view: top level - lib/gltests - test-stddef.c (source / functions) Hit Total Coverage
Test: GNU Libidn Lines: 2 2 100.0 %
Date: 2015-08-01 15:30:48 Functions: 1 1 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* Test of <stddef.h> substitute.
       2             :    Copyright (C) 2009-2015 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 <http://www.gnu.org/licenses/>.  */
      16             : 
      17             : /* Written by Eric Blake <ebb9@byu.net>, 2009.  */
      18             : 
      19             : #include <config.h>
      20             : 
      21             : #include <stddef.h>
      22             : #include <stdalign.h>
      23             : #include "verify.h"
      24             : 
      25             : /* Check that appropriate types are defined.  */
      26             : wchar_t a = 'c';
      27             : ptrdiff_t b = 1;
      28             : size_t c = 2;
      29             : max_align_t x;
      30             : 
      31             : /* Check that NULL can be passed through varargs as a pointer type,
      32             :    per POSIX 2008.  */
      33             : verify (sizeof NULL == sizeof (void *));
      34             : 
      35             : /* Check that offsetof produces integer constants with correct type.  */
      36             : struct d
      37             : {
      38             :   char e;
      39             :   char f;
      40             : };
      41             : /* Solaris 10 has a bug where offsetof is under-parenthesized, and
      42             :    cannot be used as an arbitrary expression.  However, since it is
      43             :    unlikely to bite real code, we ignore that short-coming.  */
      44             : /* verify (sizeof offsetof (struct d, e) == sizeof (size_t)); */
      45             : verify (sizeof (offsetof (struct d, e)) == sizeof (size_t));
      46             : verify (offsetof (struct d, e) < -1); /* Must be unsigned.  */
      47             : verify (offsetof (struct d, f) == 1);
      48             : 
      49             : /* Check max_align_t's alignment.  */
      50             : verify (alignof (double) <= alignof (max_align_t));
      51             : verify (alignof (int) <= alignof (max_align_t));
      52             : verify (alignof (long double) <= alignof (max_align_t));
      53             : verify (alignof (long int) <= alignof (max_align_t));
      54             : verify (alignof (ptrdiff_t) <= alignof (max_align_t));
      55             : verify (alignof (size_t) <= alignof (max_align_t));
      56             : verify (alignof (wchar_t) <= alignof (max_align_t));
      57             : verify (alignof (struct d) <= alignof (max_align_t));
      58             : #if defined __GNUC__ || defined __IBM__ALIGNOF__
      59             : verify (__alignof__ (double) <= __alignof__ (max_align_t));
      60             : verify (__alignof__ (int) <= __alignof__ (max_align_t));
      61             : verify (__alignof__ (long double) <= __alignof__ (max_align_t));
      62             : verify (__alignof__ (long int) <= __alignof__ (max_align_t));
      63             : verify (__alignof__ (ptrdiff_t) <= __alignof__ (max_align_t));
      64             : verify (__alignof__ (size_t) <= __alignof__ (max_align_t));
      65             : verify (__alignof__ (wchar_t) <= __alignof__ (max_align_t));
      66             : verify (__alignof__ (struct d) <= __alignof__ (max_align_t));
      67             : #endif
      68             : 
      69             : int
      70           1 : main (void)
      71             : {
      72           1 :   return 0;
      73             : }

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