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99dee823 | 1 | // Copyright (C) 2004-2021 Free Software Foundation, Inc. |
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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 | |
748086b7 | 6 | // Free Software Foundation; either version 3, or (at your option) |
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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 | |
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15 | // with this library; see the file COPYING3. If not see |
16 | // <http://www.gnu.org/licenses/>. | |
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17 | |
18 | // 27.6.1.2.2 arithmetic extractors | |
19 | ||
d9f069ab | 20 | // { dg-do run { xfail { lax_strtofp } } } |
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21 | |
22 | #include <istream> | |
23 | #include <sstream> | |
6725add5 | 24 | #include <limits> |
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25 | #include <testsuite_hooks.h> |
26 | ||
27 | // libstdc++/3720 | |
28 | // excess input should not cause a core dump | |
29 | template<typename T> | |
fd0bf20c | 30 | void test12_aux(bool integer_type) |
cfc45d90 | 31 | { |
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32 | int digits_overflow; |
33 | if (integer_type) | |
34 | // This many digits will overflow integer types in base 10. | |
35 | digits_overflow = std::numeric_limits<T>::digits10 + 2; | |
36 | else | |
37 | // This might do it, unsure. | |
38 | digits_overflow = std::numeric_limits<T>::max_exponent10 + 1; | |
39 | ||
40 | std::wstring st; | |
41 | std::wstring part = L"1234567890123456789012345678901234567890"; | |
42 | for (std::size_t i = 0; i < digits_overflow / part.size() + 1; ++i) | |
43 | st += part; | |
44 | std::wstringbuf sb(st); | |
45 | std::wistream is(&sb); | |
46 | T t; | |
47 | is >> t; | |
48 | VERIFY( is.fail() ); | |
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49 | } |
50 | ||
fd0bf20c | 51 | void test12() |
cfc45d90 | 52 | { |
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53 | test12_aux<short>(true); |
54 | test12_aux<int>(true); | |
55 | test12_aux<long>(true); | |
56 | test12_aux<float>(false); | |
57 | test12_aux<double>(false); | |
58 | test12_aux<long double>(false); | |
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59 | } |
60 | ||
61 | int main() | |
62 | { | |
63 | test12(); | |
64 | return 0; | |
65 | } |