1 /* Test file for multiple mpfr.h inclusion and va_list related functions 2 3 Copyright 2011-2020 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 #ifdef HAVE_CONFIG_H 24 # include "config.h" 25 #endif 26 27 #if defined(HAVE_STDARG) && !defined(MPFR_USE_MINI_GMP) 28 29 #if _MPFR_EXP_FORMAT == 4 30 /* If mpfr_exp_t is defined as intmax_t, intmax_t must be defined before 31 the inclusion of mpfr.h (this test doesn't use mpfr-impl.h). */ 32 # include <stdint.h> 33 #endif 34 35 /* One of the goals of this test is to detect potential issues with the 36 * following case in user code: 37 * 38 * #include <some_lib.h> 39 * #include <stdarg.h> 40 * #define MPFR_USE_VA_LIST 41 * #include <mpfr.h> 42 * 43 * where some_lib.h has "#include <mpfr.h>". So, the mpfr.h header file 44 * is included multiple times, a first time without <stdarg.h> before, 45 * and a second time with <stdarg.h> support. We need to make sure that 46 * the second inclusion is not a no-op due to some #include guard. This 47 * was fixed in r7320. 48 * 49 * Note: one needs to make sure that optimizations do not drop the call 50 * to mpfr_vfprintf. 51 */ 52 #include <mpfr.h> 53 54 #include <stdarg.h> 55 #define MPFR_USE_VA_LIST /* necessary due to GMP bug concerning inclusions */ 56 #include <mpfr.h> 57 58 #include <stdio.h> 59 #define MPFR_USE_FILE /* necessary due to GMP bug concerning inclusions */ 60 #include <mpfr.h> 61 62 #include "mpfr-test.h" 63 64 static void 65 test (FILE *fout, const char *fmt, ...) 66 { 67 va_list ap; 68 69 va_start (ap, fmt); 70 mpfr_vfprintf (fout, fmt, ap); 71 va_end (ap); 72 } 73 74 int 75 main (void) 76 { 77 tests_start_mpfr (); 78 test (stdout, ""); 79 tests_end_mpfr (); 80 return 0; 81 } 82 83 #else /* HAVE_STDARG */ 84 85 /* The test is disabled. */ 86 87 int 88 main (void) 89 { 90 return 77; 91 } 92 93 #endif /* HAVE_STDARG */ 94