| 1 | /* Common macros used by gnulib tests.
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| 2 | Copyright (C) 2006-2022 Free Software Foundation, Inc.
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| 3 |
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| 4 | This program is free software: you can redistribute it and/or modify
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| 5 | it under the terms of the GNU General Public License as published by
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| 6 | the Free Software Foundation, either version 3 of the License, or
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| 7 | (at your option) any later version.
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| 8 |
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| 9 | This program is distributed in the hope that it will be useful,
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 12 | GNU General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU General Public License
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| 15 | along with this program. If not, see <https://www.gnu.org/licenses/>. */
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| 16 |
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| 17 |
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| 18 | /* This file contains macros that are used by many gnulib tests.
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| 19 | Put here only frequently used macros, say, used by 10 tests or more. */
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| 20 |
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| 21 | #include <stdio.h>
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| 22 | #include <stdlib.h>
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| 23 |
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| 24 | #ifndef FALLTHROUGH
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| 25 | # if (__GNUC__ >= 7) || (__clang_major__ >= 10)
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| 26 | # define FALLTHROUGH __attribute__ ((__fallthrough__))
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| 27 | # else
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| 28 | # define FALLTHROUGH ((void) 0)
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| 29 | # endif
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| 30 | #endif
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| 31 |
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| 32 | /* Define ASSERT_STREAM before including this file if ASSERT must
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| 33 | target a stream other than stderr. */
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| 34 | #ifndef ASSERT_STREAM
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| 35 | # define ASSERT_STREAM stderr
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| 36 | #endif
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| 37 |
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| 38 | /* ASSERT (condition);
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| 39 | verifies that the specified condition is fulfilled. If not, a message
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| 40 | is printed to ASSERT_STREAM if defined (defaulting to stderr if
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| 41 | undefined) and the program is terminated with an error code.
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| 42 |
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| 43 | This macro has the following properties:
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| 44 | - The programmer specifies the expected condition, not the failure
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| 45 | condition. This simplifies thinking.
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| 46 | - The condition is tested always, regardless of compilation flags.
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| 47 | (Unlike the macro from <assert.h>.)
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| 48 | - On Unix platforms, the tester can debug the test program with a
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| 49 | debugger (provided core dumps are enabled: "ulimit -c unlimited").
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| 50 | - For the sake of platforms where no debugger is available (such as
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| 51 | some mingw systems), an error message is printed on the error
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| 52 | stream that includes the source location of the ASSERT invocation.
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| 53 | */
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| 54 | #define ASSERT(expr) \
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| 55 | do \
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| 56 | { \
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| 57 | if (!(expr)) \
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| 58 | { \
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| 59 | fprintf (ASSERT_STREAM, "%s:%d: assertion '%s' failed\n", \
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| 60 | __FILE__, __LINE__, #expr); \
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| 61 | fflush (ASSERT_STREAM); \
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| 62 | abort (); \
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| 63 | } \
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| 64 | } \
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| 65 | while (0)
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| 66 |
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| 67 | /* Like ASSERT, except that it uses no stdio.
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| 68 | Requires #include <string.h> and #include <unistd.h>. */
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| 69 | #define ASSERT_NO_STDIO(expr) \
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| 70 | do \
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| 71 | { \
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| 72 | if (!(expr)) \
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| 73 | { \
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| 74 | WRITE_TO_STDERR (__FILE__); \
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| 75 | WRITE_TO_STDERR (":"); \
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| 76 | WRITE_MACROEXPANDED_INTEGER_TO_STDERR (__LINE__); \
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| 77 | WRITE_TO_STDERR (": assertion '"); \
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| 78 | WRITE_TO_STDERR (#expr); \
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| 79 | WRITE_TO_STDERR ("' failed\n"); \
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| 80 | abort (); \
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| 81 | } \
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| 82 | } \
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| 83 | while (0)
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| 84 | #define WRITE_MACROEXPANDED_INTEGER_TO_STDERR(integer) \
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| 85 | WRITE_INTEGER_TO_STDERR(integer)
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| 86 | #define WRITE_INTEGER_TO_STDERR(integer) \
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| 87 | WRITE_TO_STDERR (#integer)
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| 88 | #define WRITE_TO_STDERR(string_literal) \
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| 89 | { \
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| 90 | const char *s = string_literal; \
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| 91 | int ret = write (2, s, strlen (s)); \
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| 92 | (void) ret; \
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| 93 | }
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| 94 |
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| 95 | /* SIZEOF (array)
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| 96 | returns the number of elements of an array. It works for arrays that are
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| 97 | declared outside functions and for local variables of array type. It does
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| 98 | *not* work for function parameters of array type, because they are actually
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| 99 | parameters of pointer type. */
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| 100 | #define SIZEOF(array) (sizeof (array) / sizeof (array[0]))
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| 101 |
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| 102 | /* STREQ (str1, str2)
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| 103 | Return true if two strings compare equal. */
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| 104 | #define STREQ(a, b) (strcmp (a, b) == 0)
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| 105 |
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| 106 | /* Some numbers in the interval [0,1). */
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| 107 | extern const float randomf[1000];
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| 108 | extern const double randomd[1000];
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| 109 | extern const long double randoml[1000];
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