1  /* talloc -- test file concerning memory allocation
       2  
       3  Copyright 2015-2023 Free Software Foundation, Inc.
       4  Contributed by the AriC and Caramba projects, INRIA.
       5  
       6  This file is part of the GNU MPFR Library.
       7  
       8  The GNU MPFR Library is free software; you can redistribute it and/or modify
       9  it under the terms of the GNU Lesser General Public License as published by
      10  the Free Software Foundation; either version 3 of the License, or (at your
      11  option) any later version.
      12  
      13  The GNU MPFR Library is distributed in the hope that it will be useful, but
      14  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
      15  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
      16  License for more details.
      17  
      18  You should have received a copy of the GNU Lesser General Public License
      19  along with the GNU MPFR Library; see the file COPYING.LESSER.  If not, see
      20  https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
      21  51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
      22  
      23  #include "mpfr-test.h"
      24  
      25  /* We enable the test only when MPFR_ALLOCA_MAX is not greater than the
      26     default value: we do not want to make the test fail if the user has
      27     redefined MPFR_ALLOCA_MAX to a very large value. */
      28  
      29  /* Needed with --with-gmp-build */
      30  #ifndef MPFR_ALLOCA_MAX
      31  # define MPFR_ALLOCA_MAX 16384
      32  #endif
      33  
      34  /* ISO C99 is needed by MPFR_DECL_INIT. */
      35  #if __MPFR_STDC (199901L) && MPFR_ALLOCA_MAX <= 16384
      36  
      37  int
      38  main (void)
      39  {
      40    MPFR_DECL_INIT (x, 4 + MPFR_ALLOCA_MAX * CHAR_BIT);
      41    MPFR_DECL_INIT (y, 8 + MPFR_ALLOCA_MAX * CHAR_BIT);
      42  
      43    tests_start_mpfr ();
      44  
      45    /* We do not want to use mpfr_add1sp because if MPFR_WANT_ASSERT >= 2,
      46       mpfr_init is used. The following test is based on the fact that
      47       MPFR_TMP_LIMBS_ALLOC is used in mpfr_add1 before any other form
      48       of memory allocation. In r9454, this crashes because the memory
      49       allocation function used by this macro (under the condition that
      50       the size is > MPFR_ALLOCA_MAX) isn't defined yet. This bug comes
      51       from r8813.
      52       WARNING! Do not add MPFR calls before this test. Otherwise the
      53       mentioned problem may no longer be actually tested, making this
      54       test useless. For other allocation tests, it is better to use a
      55       different test file. */
      56    mpfr_set_ui (x, 1, MPFR_RNDN);
      57    mpfr_set_ui (y, 2, MPFR_RNDN);
      58    mpfr_add (x, x, y, MPFR_RNDN);
      59  
      60    tests_end_mpfr ();
      61    return 0;
      62  }
      63  
      64  #else
      65  
      66  int
      67  main (void)
      68  {
      69    return 77;
      70  }
      71  
      72  #endif