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9771e6cb | 1 | /* Test for the long double conversions in *warn* functions. |
2b778ceb | 2 | Copyright (C) 2018-2021 Free Software Foundation, Inc. |
9771e6cb GG |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
9771e6cb GG |
18 | |
19 | #include <err.h> | |
20 | #include <errno.h> | |
21 | #include <stdarg.h> | |
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | ||
26 | #include <support/check.h> | |
27 | #include <support/xmemstream.h> | |
28 | ||
29 | enum {WARN, WARNX, VWARN, VWARNX}; | |
30 | ||
31 | static void | |
32 | do_one_test (int select, const char *format, va_list args, | |
33 | long double arg1, double arg2, long double arg3, | |
34 | double arg4, const char *expected) | |
35 | { | |
36 | /* Prepare in-memory buffer to hold the output. */ | |
37 | struct xmemstream stream; | |
38 | xopen_memstream (&stream); | |
39 | FILE *old_stderr = stderr; | |
40 | stderr = stream.out; | |
41 | ||
42 | /* Write to the buffer using one of the *warn* functions. */ | |
43 | errno = 0; | |
44 | switch (select) | |
45 | { | |
46 | case WARN: | |
47 | warn (format, arg1, arg2, arg3, arg4); | |
48 | break; | |
49 | case WARNX: | |
50 | warnx (format, arg1, arg2, arg3, arg4); | |
51 | break; | |
52 | case VWARN: | |
53 | vwarn (format, args); | |
54 | break; | |
55 | case VWARNX: | |
56 | vwarnx (format, args); | |
57 | break; | |
58 | } | |
59 | ||
60 | stderr = old_stderr; | |
61 | ||
f0eaf862 | 62 | /* Close the in-memory stream. */ |
9771e6cb | 63 | xfclose_memstream (&stream); |
f0eaf862 GG |
64 | |
65 | /* Filter out the name of the program (which should always end with | |
66 | warn), so that the test case can be reused by ldbl-opt and | |
67 | ldbl-128ibm-compat. */ | |
68 | const char *needle = "warn: "; | |
69 | char *message; | |
70 | message = strstr (stream.buffer, needle); | |
71 | if (message == NULL) | |
72 | FAIL_EXIT1 ("test case error"); | |
73 | message += strlen (needle); | |
74 | ||
75 | /* Check that the rest of the output is as expected. */ | |
76 | TEST_COMPARE_STRING (message, expected); | |
9771e6cb GG |
77 | |
78 | if (stream.buffer != NULL) | |
79 | free (stream.buffer); | |
80 | } | |
81 | ||
82 | static void | |
83 | do_test_call_varg (const char *format, ...) | |
84 | { | |
85 | va_list args; | |
86 | ||
87 | va_start (args, format); | |
88 | do_one_test (VWARN, format, args, 0, 0, 0, 0, | |
9771e6cb GG |
89 | "-1.000000 - -2.000000 - -3.000000 - -4.000000: Success\n"); |
90 | va_end (args); | |
91 | ||
92 | va_start (args, format); | |
93 | do_one_test (VWARNX, format, args, 0, 0, 0, 0, | |
9771e6cb GG |
94 | "-1.000000 - -2.000000 - -3.000000 - -4.000000\n"); |
95 | va_end (args); | |
96 | } | |
97 | ||
98 | static void | |
99 | do_test_call_rarg (const char *format, long double arg1, double arg2, | |
100 | long double arg3, double arg4) | |
101 | { | |
102 | va_list args; | |
103 | memset (&args, 0, sizeof (args)); | |
104 | do_one_test (WARN, format, args, arg1, arg2, arg3, arg4, | |
9771e6cb GG |
105 | "-1.000000 - -2.000000 - -3.000000 - -4.000000: Success\n"); |
106 | do_one_test (WARNX, format, args, arg1, arg2, arg3, arg4, | |
9771e6cb GG |
107 | "-1.000000 - -2.000000 - -3.000000 - -4.000000\n"); |
108 | } | |
109 | ||
110 | static int | |
111 | do_test (void) | |
112 | { | |
113 | long double arg1 = -1; | |
114 | long double arg3 = -3; | |
115 | double arg2 = -2; | |
116 | double arg4 = -4; | |
117 | ||
118 | do_test_call_rarg ("%Lf - %f - %Lf - %f", arg1, arg2, arg3, arg4); | |
119 | do_test_call_varg ("%Lf - %f - %Lf - %f", arg1, arg2, arg3, arg4); | |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
124 | #include <support/test-driver.c> |