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: 2014-08-10 Functions: 1 1 100.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 0 0 -

           Branch data     Line data    Source code
       1                 :            : /* Test of <stddef.h> substitute.
       2                 :            :    Copyright (C) 2009-2014 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                 :            : 
      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                 :            : 
      30                 :            : /* Check that NULL can be passed through varargs as a pointer type,
      31                 :            :    per POSIX 2008.  */
      32                 :            : verify (sizeof NULL == sizeof (void *));
      33                 :            : 
      34                 :            : /* Check that offsetof produces integer constants with correct type.  */
      35                 :            : struct d
      36                 :            : {
      37                 :            :   char e;
      38                 :            :   char f;
      39                 :            : };
      40                 :            : /* Solaris 10 has a bug where offsetof is under-parenthesized, and
      41                 :            :    cannot be used as an arbitrary expression.  However, since it is
      42                 :            :    unlikely to bite real code, we ignore that short-coming.  */
      43                 :            : /* verify (sizeof offsetof (struct d, e) == sizeof (size_t)); */
      44                 :            : verify (sizeof (offsetof (struct d, e)) == sizeof (size_t));
      45                 :            : verify (offsetof (struct d, e) < -1); /* Must be unsigned.  */
      46                 :            : verify (offsetof (struct d, f) == 1);
      47                 :            : 
      48                 :            : int
      49                 :          1 : main (void)
      50                 :            : {
      51                 :          1 :   return 0;
      52                 :            : }

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