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 73