re PR libstdc++/21209 (signed integer overflow in num_get<>::_M_extract_int)
2005-04-26 Paolo Carlini <pcarlini@suse.de> PR libstdc++/21209 * include/bits/locale_facets.tcc (_M_extract_int): Avoid signed integer overflow, always use a suited unsigned type in the main parsing loop. (struct __to_unsigned_type): New. * testsuite/22_locale/num_get/get/char/16.cc: New. * testsuite/22_locale/num_get/get/wchar_t/16.cc: Likewise. From-SVN: r98768
This commit is contained in:
Paolo Carlini
Paolo Carlini
parent
c579626684
commit
44ecf60364
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@ -1,3 +1,13 @@
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2005-04-26 Paolo Carlini <pcarlini@suse.de>
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PR libstdc++/21209
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* include/bits/locale_facets.tcc (_M_extract_int): Avoid signed
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integer overflow, always use a suited unsigned type in the main
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parsing loop.
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(struct __to_unsigned_type): New.
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* testsuite/22_locale/num_get/get/char/16.cc: New.
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* testsuite/22_locale/num_get/get/wchar_t/16.cc: Likewise.
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2005-04-25 Paolo Carlini <pcarlini@suse.de>
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PR libstdc++/21035
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@ -440,6 +440,20 @@ namespace std
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return __beg;
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}
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template<typename _ValueT>
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struct __to_unsigned_type
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{ typedef _ValueT __type; };
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template<>
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struct __to_unsigned_type<long>
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{ typedef unsigned long __type; };
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#ifdef _GLIBCXX_USE_LONG_LONG
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template<>
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struct __to_unsigned_type<long long>
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{ typedef unsigned long long __type; };
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#endif
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template<typename _CharT, typename _InIter>
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template<typename _ValueT>
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_InIter
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@ -447,8 +461,9 @@ namespace std
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_M_extract_int(_InIter __beg, _InIter __end, ios_base& __io,
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ios_base::iostate& __err, _ValueT& __v) const
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{
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typedef char_traits<_CharT> __traits_type;
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typedef typename numpunct<_CharT>::__cache_type __cache_type;
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typedef char_traits<_CharT> __traits_type;
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typedef typename __to_unsigned_type<_ValueT>::__type __unsigned_type;
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typedef typename numpunct<_CharT>::__cache_type __cache_type;
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__use_cache<__cache_type> __uc;
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const locale& __loc = __io._M_getloc();
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const __cache_type* __lc = __uc(__loc);
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@ -536,103 +551,56 @@ namespace std
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__found_grouping.reserve(32);
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int __sep_pos = 0;
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bool __overflow = false;
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_ValueT __result = 0;
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const __unsigned_type __max = __negative ?
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-numeric_limits<_ValueT>::min() : numeric_limits<_ValueT>::max();
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const __unsigned_type __smax = __max / __base;
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__unsigned_type __result = 0;
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const char_type* __q;
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const char_type* __lit_zero = __lit + __num_base::_S_izero;
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if (__negative)
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while (!__testeof)
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{
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const _ValueT __min = numeric_limits<_ValueT>::min() / __base;
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while (!__testeof)
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// According to 22.2.2.1.2, p8-9, first look for thousands_sep
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// and decimal_point.
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if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
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{
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// According to 22.2.2.1.2, p8-9, first look for thousands_sep
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// and decimal_point.
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if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
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// NB: Thousands separator at the beginning of a string
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// is a no-no, as is two consecutive thousands separators.
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if (__sep_pos)
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{
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// NB: Thousands separator at the beginning of a string
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// is a no-no, as is two consecutive thousands separators.
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if (__sep_pos)
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{
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__found_grouping += static_cast<char>(__sep_pos);
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__sep_pos = 0;
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}
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else
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{
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__err |= ios_base::failbit;
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break;
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}
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}
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else if (__c == __lc->_M_decimal_point)
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break;
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else if ((__q = __traits_type::find(__lit_zero, __len, __c)))
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{
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int __digit = __q - __lit_zero;
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if (__digit > 15)
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__digit -= 6;
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if (__result < __min)
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__overflow = true;
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else
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{
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const _ValueT __new_result = (__result * __base
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- __digit);
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__overflow |= __new_result > __result;
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__result = __new_result;
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++__sep_pos;
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}
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__found_grouping += static_cast<char>(__sep_pos);
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__sep_pos = 0;
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}
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else
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// Not a valid input item.
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break;
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if (++__beg != __end)
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__c = *__beg;
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else
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__testeof = true;
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{
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__err |= ios_base::failbit;
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break;
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}
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}
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}
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else
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{
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const _ValueT __max = numeric_limits<_ValueT>::max() / __base;
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while (!__testeof)
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else if (__c == __lc->_M_decimal_point)
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break;
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else if ((__q = __traits_type::find(__lit_zero, __len, __c)))
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{
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if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
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{
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if (__sep_pos)
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{
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__found_grouping += static_cast<char>(__sep_pos);
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__sep_pos = 0;
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}
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else
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{
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__err |= ios_base::failbit;
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break;
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}
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}
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else if (__c == __lc->_M_decimal_point)
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break;
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else if ((__q = __traits_type::find(__lit_zero, __len, __c)))
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{
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int __digit = __q - __lit_zero;
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if (__digit > 15)
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__digit -= 6;
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if (__result > __max)
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__overflow = true;
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else
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{
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const _ValueT __new_result = (__result * __base
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+ __digit);
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__overflow |= __new_result < __result;
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__result = __new_result;
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++__sep_pos;
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}
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}
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int __digit = __q - __lit_zero;
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if (__digit > 15)
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__digit -= 6;
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if (__result > __smax)
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__overflow = true;
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else
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break;
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if (++__beg != __end)
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__c = *__beg;
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else
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__testeof = true;
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{
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__result *= __base;
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__overflow |= __result > __max - __digit;
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__result += __digit;
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++__sep_pos;
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}
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}
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else
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// Not a valid input item.
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break;
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if (++__beg != __end)
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__c = *__beg;
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else
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__testeof = true;
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}
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// Digit grouping is checked. If grouping and found_grouping don't
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@ -650,7 +618,7 @@ namespace std
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if (!(__err & ios_base::failbit) && !__overflow
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&& (__sep_pos || __found_zero || __found_grouping.size()))
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__v = __result;
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__v = __negative ? -__result : __result;
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else
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__err |= ios_base::failbit;
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@ -0,0 +1,202 @@
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// 2005-04-26 Paolo Carlini <pcarlini@suse.de>
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// Copyright (C) 2005 Free Software Foundation
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// 22.2.2.1.1 num_get members
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#include <locale>
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#include <sstream>
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#include <limits>
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#include <testsuite_hooks.h>
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void test01()
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{
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using namespace std;
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typedef istreambuf_iterator<char> iterator_type;
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bool test __attribute__((unused)) = true;
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stringstream ss;
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const num_get<char>& ng = use_facet<num_get<char> >(ss.getloc());
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ios_base::iostate err;
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iterator_type end;
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unsigned short us0, us1 = numeric_limits<unsigned short>::max();
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unsigned int ui0, ui1 = numeric_limits<unsigned int>::max();
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unsigned long ul0, ul1 = numeric_limits<unsigned long>::max();
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long l01, l1 = numeric_limits<long>::max();
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long l02, l2 = numeric_limits<long>::min();
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#ifdef _GLIBCXX_USE_LONG_LONG
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unsigned long long ull0, ull1 = numeric_limits<unsigned long long>::max();
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long long ll01, ll1 = numeric_limits<long long>::max();
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long long ll02, ll2 = numeric_limits<long long>::min();
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#endif
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const string empty;
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us0 = 0;
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ss << us1;
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, us0);
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VERIFY( err == ios_base::eofbit );
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VERIFY( us0 == us1 );
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us0 = 0;
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ss.clear();
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ss.str(empty);
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ss << us1 << '0';
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, us0);
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VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
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VERIFY( us0 == 0 );
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ui0 = 0U;
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ss.clear();
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ss.str(empty);
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ss << ui1 << ' ';
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, ui0);
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VERIFY( err == ios_base::goodbit );
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VERIFY( ui0 == ui1 );
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ui0 = 0U;
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ss.clear();
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ss.str(empty);
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ss << ui1 << '1';
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, ui0);
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VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
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VERIFY( ui0 == 0U );
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ul0 = 0UL;
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ss.clear();
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ss.str(empty);
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ss << ul1;
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, ul0);
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VERIFY( err == ios_base::eofbit );
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VERIFY( ul0 == ul1 );
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ul0 = 0UL;
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ss.clear();
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ss.str(empty);
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ss << ul1 << '2';
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, ul0);
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VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
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VERIFY( ul0 == 0UL );
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l01 = 0L;
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ss.clear();
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ss.str(empty);
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ss << l1 << ' ';
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, l01);
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VERIFY( err == ios_base::goodbit );
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VERIFY( l01 == l1 );
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l01 = 0L;
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ss.clear();
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ss.str(empty);
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ss << l1 << '3';
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, l01);
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VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
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VERIFY( l01 == 0L );
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l02 = 0L;
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ss.clear();
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ss.str(empty);
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ss << l2;
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, l02);
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VERIFY( err == ios_base::eofbit );
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VERIFY( l02 == l2 );
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l02 = 0L;
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ss.clear();
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ss.str(empty);
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ss << l2 << '4';
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, l02);
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VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
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VERIFY( l02 == 0L );
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#ifdef _GLIBCXX_USE_LONG_LONG
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ull0 = 0ULL;
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ss.clear();
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ss.str(empty);
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ss << ull1 << ' ';
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, ull0);
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VERIFY( err == ios_base::goodbit );
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VERIFY( ull0 == ull1 );
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ull0 = 0ULL;
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ss.clear();
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ss.str(empty);
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ss << ull1 << '5';
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, ull0);
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VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
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VERIFY( ull0 == 0ULL );
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ll01 = 0LL;
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ss.clear();
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ss.str(empty);
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ss << ll1;
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, ll01);
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VERIFY( err == ios_base::eofbit );
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VERIFY( ll01 == ll1 );
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ll01 = 0LL;
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ss.clear();
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ss.str(empty);
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ss << ll1 << '6';
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, ll01);
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VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
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VERIFY( ll01 == 0LL );
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ll02 = 0LL;
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ss.clear();
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ss.str(empty);
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ss << ll2 << ' ';
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, ll02);
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VERIFY( err == ios_base::goodbit );
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VERIFY( ll02 == ll2 );
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ll02 = 0LL;
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ss.clear();
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ss.str(empty);
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ss << ll2 << '7';
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err = ios_base::goodbit;
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end = ng.get(ss.rdbuf(), 0, ss, err, ll02);
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VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
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VERIFY( ll02 == 0LL );
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#endif
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}
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int main()
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{
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test01();
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return 0;
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}
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@ -0,0 +1,202 @@
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// 2005-04-26 Paolo Carlini <pcarlini@suse.de>
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|
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// Copyright (C) 2005 Free Software Foundation
|
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//
|
||||
// This file is part of the GNU ISO C++ Library. This library is free
|
||||
// software; you can redistribute it and/or modify it under the
|
||||
// terms of the GNU General Public License as published by the
|
||||
// Free Software Foundation; either version 2, or (at your option)
|
||||
// any later version.
|
||||
|
||||
// This library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
|
||||
// You should have received a copy of the GNU General Public License along
|
||||
// with this library; see the file COPYING. If not, write to the Free
|
||||
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
||||
// USA.
|
||||
|
||||
// 22.2.2.1.1 num_get members
|
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|
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#include <locale>
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#include <sstream>
|
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#include <limits>
|
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#include <testsuite_hooks.h>
|
||||
|
||||
void test01()
|
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{
|
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using namespace std;
|
||||
typedef istreambuf_iterator<wchar_t> iterator_type;
|
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|
||||
bool test __attribute__((unused)) = true;
|
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|
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wstringstream ss;
|
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const num_get<wchar_t>& ng = use_facet<num_get<wchar_t> >(ss.getloc());
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ios_base::iostate err;
|
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iterator_type end;
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|
||||
unsigned short us0, us1 = numeric_limits<unsigned short>::max();
|
||||
unsigned int ui0, ui1 = numeric_limits<unsigned int>::max();
|
||||
unsigned long ul0, ul1 = numeric_limits<unsigned long>::max();
|
||||
long l01, l1 = numeric_limits<long>::max();
|
||||
long l02, l2 = numeric_limits<long>::min();
|
||||
#ifdef _GLIBCXX_USE_LONG_LONG
|
||||
unsigned long long ull0, ull1 = numeric_limits<unsigned long long>::max();
|
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long long ll01, ll1 = numeric_limits<long long>::max();
|
||||
long long ll02, ll2 = numeric_limits<long long>::min();
|
||||
#endif
|
||||
|
||||
const wstring empty;
|
||||
|
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us0 = 0;
|
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ss << us1;
|
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err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, us0);
|
||||
VERIFY( err == ios_base::eofbit );
|
||||
VERIFY( us0 == us1 );
|
||||
|
||||
us0 = 0;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << us1 << L'0';
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, us0);
|
||||
VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
|
||||
VERIFY( us0 == 0 );
|
||||
|
||||
ui0 = 0U;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << ui1 << ' ';
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, ui0);
|
||||
VERIFY( err == ios_base::goodbit );
|
||||
VERIFY( ui0 == ui1 );
|
||||
|
||||
ui0 = 0U;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << ui1 << L'1';
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, ui0);
|
||||
VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
|
||||
VERIFY( ui0 == 0U );
|
||||
|
||||
ul0 = 0UL;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << ul1;
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, ul0);
|
||||
VERIFY( err == ios_base::eofbit );
|
||||
VERIFY( ul0 == ul1 );
|
||||
|
||||
ul0 = 0UL;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << ul1 << L'2';
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, ul0);
|
||||
VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
|
||||
VERIFY( ul0 == 0UL );
|
||||
|
||||
l01 = 0L;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << l1 << L' ';
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, l01);
|
||||
VERIFY( err == ios_base::goodbit );
|
||||
VERIFY( l01 == l1 );
|
||||
|
||||
l01 = 0L;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << l1 << L'3';
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, l01);
|
||||
VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
|
||||
VERIFY( l01 == 0L );
|
||||
|
||||
l02 = 0L;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << l2;
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, l02);
|
||||
VERIFY( err == ios_base::eofbit );
|
||||
VERIFY( l02 == l2 );
|
||||
|
||||
l02 = 0L;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << l2 << L'4';
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, l02);
|
||||
VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
|
||||
VERIFY( l02 == 0L );
|
||||
|
||||
#ifdef _GLIBCXX_USE_LONG_LONG
|
||||
ull0 = 0ULL;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << ull1 << L' ';
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, ull0);
|
||||
VERIFY( err == ios_base::goodbit );
|
||||
VERIFY( ull0 == ull1 );
|
||||
|
||||
ull0 = 0ULL;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << ull1 << L'5';
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, ull0);
|
||||
VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
|
||||
VERIFY( ull0 == 0ULL );
|
||||
|
||||
ll01 = 0LL;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << ll1;
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, ll01);
|
||||
VERIFY( err == ios_base::eofbit );
|
||||
VERIFY( ll01 == ll1 );
|
||||
|
||||
ll01 = 0LL;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << ll1 << L'6';
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, ll01);
|
||||
VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
|
||||
VERIFY( ll01 == 0LL );
|
||||
|
||||
ll02 = 0LL;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << ll2 << L' ';
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, ll02);
|
||||
VERIFY( err == ios_base::goodbit );
|
||||
VERIFY( ll02 == ll2 );
|
||||
|
||||
ll02 = 0LL;
|
||||
ss.clear();
|
||||
ss.str(empty);
|
||||
ss << ll2 << L'7';
|
||||
err = ios_base::goodbit;
|
||||
end = ng.get(ss.rdbuf(), 0, ss, err, ll02);
|
||||
VERIFY( err == (ios_base::failbit | ios_base::eofbit) );
|
||||
VERIFY( ll02 == 0LL );
|
||||
#endif
|
||||
}
|
||||
|
||||
int main()
|
||||
{
|
||||
test01();
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue