1 /* Test binary printf formats.
2 Copyright (C) 2021 Free Software Foundation, Inc.
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
17 <https://www.gnu.org/licenses/>. */
18
19 #include <limits.h>
20 #include <stdio.h>
21 #include <string.h>
22 #include <wchar.h>
23
24 #include <libc-diag.h>
25 #include <support/check.h>
26
27 /* GCC does not know the %b or %B formats before GCC 12. */
28 DIAG_PUSH_NEEDS_COMMENT;
29 #if !__GNUC_PREREQ (12, 0)
30 DIAG_IGNORE_NEEDS_COMMENT (11, "-Wformat");
31 DIAG_IGNORE_NEEDS_COMMENT (11, "-Wformat-extra-args");
32 #endif
33
34 #define CHECK_PRINTF(EXPECTED, FMT, ...) \
35 do \
36 { \
37 int ret = SNPRINTF (buf, sizeof buf / sizeof buf[0], L_(FMT), \
38 __VA_ARGS__); \
39 TEST_COMPARE_STRING_MACRO (buf, L_(EXPECTED)); \
40 TEST_COMPARE (ret, STRLEN (L_(EXPECTED))); \
41 } \
42 while (0)
43
44 static int
do_test(void)45 do_test (void)
46 {
47 CHAR buf[1024];
48 CHECK_PRINTF ("0", "%b", 0u);
49 CHECK_PRINTF ("0", "%B", 0u);
50 CHECK_PRINTF ("0", "%#b", 0u);
51 CHECK_PRINTF ("0", "%#B", 0u);
52 CHECK_PRINTF ("1", "%b", 1u);
53 CHECK_PRINTF ("1", "%B", 1u);
54 CHECK_PRINTF ("10", "%b", 2u);
55 CHECK_PRINTF ("10", "%B", 2u);
56 CHECK_PRINTF ("11", "%b", 3u);
57 CHECK_PRINTF ("11", "%B", 3u);
58 CHECK_PRINTF ("10000111011001010100001100100001", "%b", 0x87654321);
59 CHECK_PRINTF ("10000111011001010100001100100001", "%B", 0x87654321);
60 CHECK_PRINTF ("100001100100001", "%hb", (int) 0x87654321);
61 CHECK_PRINTF ("100001100100001", "%hB", (int) 0x87654321);
62 CHECK_PRINTF ("100001", "%hhb", (int) 0x87654321);
63 CHECK_PRINTF ("100001", "%hhB", (int) 0x87654321);
64 CHECK_PRINTF ("10000111011001010100001100100001", "%lb", 0x87654321ul);
65 CHECK_PRINTF ("10000111011001010100001100100001", "%lB", 0x87654321ul);
66 CHECK_PRINTF ("11111110110111001011101010011001"
67 "10000111011001010100001100100001", "%llb",
68 0xfedcba9987654321ull);
69 CHECK_PRINTF ("11111110110111001011101010011001"
70 "10000111011001010100001100100001", "%llB",
71 0xfedcba9987654321ull);
72 #if LONG_WIDTH >= 64
73 CHECK_PRINTF ("11111110110111001011101010011001"
74 "10000111011001010100001100100001", "%lb",
75 0xfedcba9987654321ul);
76 CHECK_PRINTF ("11111110110111001011101010011001"
77 "10000111011001010100001100100001", "%lB",
78 0xfedcba9987654321ul);
79 #endif
80 CHECK_PRINTF (" 1010", "%5b", 10u);
81 CHECK_PRINTF (" 1010", "%5B", 10u);
82 CHECK_PRINTF ("01010", "%05b", 10u);
83 CHECK_PRINTF ("01010", "%05B", 10u);
84 CHECK_PRINTF ("1011 ", "%-5b", 11u);
85 CHECK_PRINTF ("1011 ", "%-5B", 11u);
86 CHECK_PRINTF ("0b10011", "%#b", 19u);
87 CHECK_PRINTF ("0B10011", "%#B", 19u);
88 CHECK_PRINTF (" 0b10011", "%#10b", 19u);
89 CHECK_PRINTF (" 0B10011", "%#10B", 19u);
90 CHECK_PRINTF ("0b00010011", "%0#10b", 19u);
91 CHECK_PRINTF ("0B00010011", "%0#10B", 19u);
92 CHECK_PRINTF ("0b00010011", "%#010b", 19u);
93 CHECK_PRINTF ("0B00010011", "%#010B", 19u);
94 CHECK_PRINTF ("0b10011 ", "%#-10b", 19u);
95 CHECK_PRINTF ("0B10011 ", "%#-10B", 19u);
96 CHECK_PRINTF ("00010011", "%.8b", 19u);
97 CHECK_PRINTF ("00010011", "%.8B", 19u);
98 CHECK_PRINTF ("0b00010011", "%#.8b", 19u);
99 CHECK_PRINTF ("0B00010011", "%#.8B", 19u);
100 CHECK_PRINTF (" 00010011", "%15.8b", 19u);
101 CHECK_PRINTF (" 00010011", "%15.8B", 19u);
102 CHECK_PRINTF ("00010011 ", "%-15.8b", 19u);
103 CHECK_PRINTF ("00010011 ", "%-15.8B", 19u);
104 CHECK_PRINTF (" 0b00010011", "%#15.8b", 19u);
105 CHECK_PRINTF (" 0B00010011", "%#15.8B", 19u);
106 CHECK_PRINTF ("0b00010011 ", "%-#15.8b", 19u);
107 CHECK_PRINTF ("0B00010011 ", "%-#15.8B", 19u);
108 /* GCC diagnoses ignored flags. */
109 DIAG_PUSH_NEEDS_COMMENT;
110 DIAG_IGNORE_NEEDS_COMMENT (12, "-Wformat");
111 /* '0' flag ignored with '-'. */
112 CHECK_PRINTF ("1011 ", "%0-5b", 11u);
113 CHECK_PRINTF ("1011 ", "%0-5B", 11u);
114 CHECK_PRINTF ("0b10011 ", "%#0-10b", 19u);
115 CHECK_PRINTF ("0B10011 ", "%#0-10B", 19u);
116 /* '0' flag ignored with precision. */
117 CHECK_PRINTF (" 00010011", "%015.8b", 19u);
118 CHECK_PRINTF (" 00010011", "%015.8B", 19u);
119 CHECK_PRINTF (" 0b00010011", "%0#15.8b", 19u);
120 CHECK_PRINTF (" 0B00010011", "%0#15.8B", 19u);
121 DIAG_POP_NEEDS_COMMENT;
122 /* Test positional argument handling. */
123 CHECK_PRINTF ("test 1011 test2 100010001000100010001000100010001",
124 "%2$s %1$b %4$s %3$llb", 11u, "test", 0x111111111ull, "test2");
125 return 0;
126 }
127
128 DIAG_POP_NEEDS_COMMENT;
129
130 #include <support/test-driver.c>
131