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re PR libstdc++/15361 (bitset<>::_Find_next fails)

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2004-05-14  Paolo Carlini  <pcarlini@suse.de>
	    Ivan Godard  <igodard@pacbell.net>

	PR libstdc++/15361
	* include/std/std_bitset.h (_Base_bitset<_Nw>::_M_do_find_next): Fix.
	* testsuite/23_containers/bitset/ext/15361.cc: New.

Co-Authored-By: Ivan Godard <igodard@pacbell.net>

From-SVN: r81852
This commit is contained in:
Paolo Carlini 2004-05-14 17:01:49 +00:00 • committed by Paolo Carlini
parent a01a235c76
commit 394ef95eaf
3 changed files with 50 additions and 3 deletions
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7
libstdc++-v3/ChangeLog
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@ -1,3 +1,10 @@
2004-05-14 Paolo Carlini <pcarlini@suse.de>
Ivan Godard <igodard@pacbell.net>
PR libstdc++/15361
* include/std/std_bitset.h (_Base_bitset<_Nw>::_M_do_find_next): Fix.
* testsuite/23_containers/bitset/ext/15361.cc: New.
2004-05-13 Benjamin Kosnik <bkoz@redhat.com>
PR libstdc++/15046

6
libstdc++-v3/include/std/std_bitset.h
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@ -1,6 +1,6 @@
// <bitset> -*- C++ -*-
// Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
// Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
//
// 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
@ -290,7 +290,7 @@ namespace _GLIBCXX_STD
++__prev;
// check out of bounds
if ( __prev >= _Nw * _GLIBCXX_BITSET_BITS_PER_WORD )
if (__prev >= _Nw * _GLIBCXX_BITSET_BITS_PER_WORD)
return __not_found;
// search first word
@ -298,7 +298,7 @@ namespace _GLIBCXX_STD
_WordT __thisword = _M_w[__i];
// mask off bits below bound
__thisword >>= __prev + 1;
__thisword &= (~static_cast<_WordT>(0)) << _S_whichbit(__prev);
if (__thisword != static_cast<_WordT>(0))
return __i * _GLIBCXX_BITSET_BITS_PER_WORD

40
libstdc++-v3/testsuite/23_containers/bitset/ext/15361.cc Normal file
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@ -0,0 +1,40 @@
// Copyright (C) 2004 Free Software Foundation, Inc.
//
// 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.
#include <bitset>
#include <testsuite_hooks.h>
// libstdc++/15361
void test01()
{
using namespace std;
bool test __attribute__((unused)) = true;
bitset<256> b;
b.set(225);
b.set(226);
VERIFY( b._Find_first() == 225 );
VERIFY( b._Find_next(225) == 226 );
}
int main()
{
test01();
return 0;
}