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1 | // Copyright (C) 2017-2024 Free Software Foundation, Inc. | |
2 | // | |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
18 | // <charconv> is supported in C++14 as a GNU extension | |
19 | // { dg-do run { target c++14 } } | |
20 | ||
21 | #include <charconv> | |
22 | #include <testsuite_hooks.h> | |
23 | ||
24 | // Test std::to_chars error handling. | |
25 | ||
26 | void | |
27 | test01() | |
28 | { | |
29 | char buf[9] = "********"; | |
30 | std::to_chars_result r; | |
31 | ||
32 | r = std::to_chars(buf, buf, 1); | |
33 | VERIFY( r.ec == std::errc::value_too_large ); | |
34 | VERIFY( r.ptr == buf ); | |
35 | VERIFY( *r.ptr == '*' ); | |
36 | ||
37 | r = std::to_chars(buf, buf + 3, 0b1000, 2); | |
38 | VERIFY( r.ec == std::errc::value_too_large ); | |
39 | VERIFY( r.ptr == buf + 3 ); | |
40 | VERIFY( *r.ptr == '*' ); | |
41 | r = std::to_chars(buf, buf + 4, 0b1000, 2); | |
42 | VERIFY( r.ec == std::errc{} ); | |
43 | VERIFY( r.ptr == buf + 4 ); | |
44 | VERIFY( *r.ptr == '*' ); | |
45 | ||
46 | r = std::to_chars(buf, buf + 4, 010000, 8); | |
47 | VERIFY( r.ec == std::errc::value_too_large ); | |
48 | VERIFY( r.ptr == buf + 4 ); | |
49 | VERIFY( *r.ptr == '*' ); | |
50 | r = std::to_chars(buf, buf + 5, 010000, 8); | |
51 | VERIFY( r.ec == std::errc{} ); | |
52 | VERIFY( r.ptr == buf + 5 ); | |
53 | VERIFY( *r.ptr == '*' ); | |
54 | ||
55 | r = std::to_chars(buf, buf + 5, 100000, 10); | |
56 | VERIFY( r.ec == std::errc::value_too_large ); | |
57 | VERIFY( r.ptr == buf + 5 ); | |
58 | VERIFY( *r.ptr == '*' ); | |
59 | r = std::to_chars(buf, buf + 6, 100000, 10); | |
60 | VERIFY( r.ec == std::errc{} ); | |
61 | VERIFY( r.ptr == buf + 6 ); | |
62 | VERIFY( *r.ptr == '*' ); | |
63 | ||
64 | r = std::to_chars(buf, buf + 6, 0x1000000, 16); | |
65 | VERIFY( r.ec == std::errc::value_too_large ); | |
66 | VERIFY( r.ptr == buf + 6 ); | |
67 | VERIFY( *r.ptr == '*' ); | |
68 | r = std::to_chars(buf, buf + 7, 0x1000000, 16); | |
69 | VERIFY( r.ec == std::errc{} ); | |
70 | VERIFY( r.ptr == buf + 7 ); | |
71 | VERIFY( *r.ptr == '*' ); | |
72 | } | |
73 | ||
74 | int | |
75 | main() | |
76 | { | |
77 | test01(); | |
78 | } |