Mercurial > gnulib
view tests/test-stddef.c @ 40158:383f7a766b7c
test-framework-sh: Improve maintainability.
* tests/init.sh: Clarify what belongs together. Reorder definitions.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 27 Jan 2019 16:55:27 +0100 |
parents | b06060465f09 |
children |
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/* Test of <stddef.h> substitute. Copyright (C) 2009-2019 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ /* Written by Eric Blake <ebb9@byu.net>, 2009. */ #include <config.h> #include <stddef.h> #include <limits.h> #include <stdalign.h> #include "verify.h" /* Check that appropriate types are defined. */ wchar_t a = 'c'; ptrdiff_t b = 1; size_t c = 2; max_align_t x; /* Check that NULL can be passed through varargs as a pointer type, per POSIX 2008. */ verify (sizeof NULL == sizeof (void *)); /* Check that offsetof produces integer constants with correct type. */ struct d { char e; char f; }; /* Solaris 10 has a bug where offsetof is under-parenthesized, and cannot be used as an arbitrary expression. However, since it is unlikely to bite real code, we ignore that short-coming. */ /* verify (sizeof offsetof (struct d, e) == sizeof (size_t)); */ verify (sizeof (offsetof (struct d, e)) == sizeof (size_t)); verify (offsetof (struct d, f) == 1); /* offsetof promotes to an unsigned integer if and only if sizes do not fit in int. */ verify ((offsetof (struct d, e) < -1) == (INT_MAX < (size_t) -1)); /* Check max_align_t's alignment. */ verify (alignof (double) <= alignof (max_align_t)); verify (alignof (int) <= alignof (max_align_t)); verify (alignof (long double) <= alignof (max_align_t)); verify (alignof (long int) <= alignof (max_align_t)); verify (alignof (ptrdiff_t) <= alignof (max_align_t)); verify (alignof (size_t) <= alignof (max_align_t)); verify (alignof (wchar_t) <= alignof (max_align_t)); verify (alignof (struct d) <= alignof (max_align_t)); #if defined __GNUC__ || defined __IBM__ALIGNOF__ verify (__alignof__ (double) <= __alignof__ (max_align_t)); verify (__alignof__ (int) <= __alignof__ (max_align_t)); verify (__alignof__ (long double) <= __alignof__ (max_align_t)); verify (__alignof__ (long int) <= __alignof__ (max_align_t)); verify (__alignof__ (ptrdiff_t) <= __alignof__ (max_align_t)); verify (__alignof__ (size_t) <= __alignof__ (max_align_t)); verify (__alignof__ (wchar_t) <= __alignof__ (max_align_t)); verify (__alignof__ (struct d) <= __alignof__ (max_align_t)); #endif int main (void) { return 0; }