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Member "gnuastro-0.8/bootstrapped/tests/test-stdalign.c" (28 Dec 2018, 3802 Bytes) of package /linux/privat/gnuastro-0.8.tar.lz:


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    1 /* Test of <stdalign.h>.
    2    Copyright 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 Paul Eggert, inspired by Bruno Haible's test-alignof.c.  */
   18 
   19 #include <config.h>
   20 
   21 #include <stdalign.h>
   22 
   23 #include <stddef.h>
   24 #include <stdint.h>
   25 
   26 #include "verify.h"
   27 
   28 #include "macros.h"
   29 
   30 typedef long double longdouble;
   31 typedef struct { char a[1]; } struct1;
   32 typedef struct { char a[2]; } struct2;
   33 typedef struct { char a[3]; } struct3;
   34 typedef struct { char a[4]; } struct4;
   35 
   36 verify (__alignof_is_defined == 1);
   37 #ifndef alignof
   38 # error "alignof is not a macro"
   39 #endif
   40 
   41 #if __alignas_is_defined
   42 verify (__alignas_is_defined == 1);
   43 # ifndef alignas
   44 #  error "alignas is not a macro"
   45 # endif
   46 /* mingw can go up only to 8.  8 is all that GNU Emacs needs, so let's
   47    limit the test to 8 for now.  */
   48 # define TEST_ALIGNMENT 8
   49 #else
   50 # define _Alignas(alignment)
   51 # define alignas(alignment)
   52 # define TEST_ALIGNMENT 1
   53 #endif
   54 
   55 #define CHECK_STATIC(type) \
   56   typedef struct { char slot1; type slot2; } type##_helper; \
   57   verify (alignof (type) == offsetof (type##_helper, slot2)); \
   58   verify (_Alignof (type) == alignof (type)); \
   59   const int type##_alignment = alignof (type); \
   60   type alignas (TEST_ALIGNMENT) static_##type##_alignas; \
   61   type _Alignas (TEST_ALIGNMENT) static_##type##_Alignas
   62 
   63 #define CHECK_ALIGNED(var) ASSERT ((uintptr_t) &(var) % TEST_ALIGNMENT == 0)
   64 
   65 CHECK_STATIC (char);
   66 CHECK_STATIC (short);
   67 CHECK_STATIC (int);
   68 CHECK_STATIC (long);
   69 #ifdef INT64_MAX
   70 CHECK_STATIC (int64_t);
   71 #endif
   72 CHECK_STATIC (float);
   73 CHECK_STATIC (double);
   74 /* CHECK_STATIC (longdouble); */
   75 CHECK_STATIC (struct1);
   76 CHECK_STATIC (struct2);
   77 CHECK_STATIC (struct3);
   78 CHECK_STATIC (struct4);
   79 
   80 int
   81 main ()
   82 {
   83 #if defined __SUNPRO_C
   84   /* Avoid a test failure due to Sun Studio Developer Bug Report #2125432.  */
   85   fputs ("Skipping test: known Sun C compiler bug\n", stderr);
   86   return 77;
   87 #elif defined __HP_cc && __ia64
   88   /* Avoid a test failure due to HP-UX Itanium cc bug; see:
   89      https://lists.gnu.org/r/bug-gnulib/2017-03/msg00078.html  */
   90   fputs ("Skipping test: known HP-UX Itanium cc compiler bug\n", stderr);
   91   return 77;
   92 #else
   93   CHECK_ALIGNED (static_char_alignas);
   94   CHECK_ALIGNED (static_char_Alignas);
   95   CHECK_ALIGNED (static_short_alignas);
   96   CHECK_ALIGNED (static_short_Alignas);
   97   CHECK_ALIGNED (static_int_alignas);
   98   CHECK_ALIGNED (static_int_Alignas);
   99   CHECK_ALIGNED (static_long_alignas);
  100   CHECK_ALIGNED (static_long_Alignas);
  101 # ifdef INT64_MAX
  102   CHECK_ALIGNED (static_int64_t_alignas);
  103   CHECK_ALIGNED (static_int64_t_Alignas);
  104 # endif
  105   CHECK_ALIGNED (static_float_alignas);
  106   CHECK_ALIGNED (static_float_Alignas);
  107   CHECK_ALIGNED (static_double_alignas);
  108   CHECK_ALIGNED (static_double_Alignas);
  109   /* CHECK_ALIGNED (static_longdouble_alignas); */
  110   /* CHECK_ALIGNED (static_longdouble_Alignas); */
  111   CHECK_ALIGNED (static_struct1_alignas);
  112   CHECK_ALIGNED (static_struct1_Alignas);
  113   CHECK_ALIGNED (static_struct2_alignas);
  114   CHECK_ALIGNED (static_struct2_Alignas);
  115   CHECK_ALIGNED (static_struct3_alignas);
  116   CHECK_ALIGNED (static_struct3_Alignas);
  117   CHECK_ALIGNED (static_struct4_alignas);
  118   CHECK_ALIGNED (static_struct4_Alignas);
  119   return 0;
  120 #endif
  121 }