istream.cc (basic_istream<char>::ignore(streamsize), [...]): Avoid _M_gcount overflows.
2005-01-02 Paolo Carlini <pcarlini@suse.de> * src/istream.cc (basic_istream<char>::ignore(streamsize), basic_istream<char>::ignore(streamsize, int_type), basic_istream<wchar_t>::ignore(streamsize), basic_istream<wchar_t>::ignore(streamsize, int_type)): Avoid _M_gcount overflows. * include/bits/istream.tcc (ignore(streamsize), ignore(streamsize, int_type)): Likewise; use snextc in the main loop, consistently with the specializations above. From-SVN: r92816
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Paolo Carlini
Paolo Carlini
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1330529e58
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bea53dbfbc
@ -1,3 +1,14 @@
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2005-01-02 Paolo Carlini <pcarlini@suse.de>
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* src/istream.cc (basic_istream<char>::ignore(streamsize),
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basic_istream<char>::ignore(streamsize, int_type),
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basic_istream<wchar_t>::ignore(streamsize),
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basic_istream<wchar_t>::ignore(streamsize, int_type)): Avoid
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_M_gcount overflows.
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* include/bits/istream.tcc (ignore(streamsize), ignore(streamsize,
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int_type)): Likewise; use snextc in the main loop, consistently
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with the specializations above.
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2005-01-02 Chris Jefferson <chris@bubblescope.net>
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* include/bits/stl_algobase.h (mismatch): Correct concept check.
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@ -1,6 +1,6 @@
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// istream classes -*- C++ -*-
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// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
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// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
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// Free Software Foundation, Inc.
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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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@ -683,13 +683,23 @@ namespace std
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{
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const int_type __eof = traits_type::eof();
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__streambuf_type* __sb = this->rdbuf();
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int_type __c = __eof;
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int_type __c = __sb->sgetc();
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if (__n != numeric_limits<streamsize>::max())
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--__n;
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while (_M_gcount <= __n
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&& !traits_type::eq_int_type(__c = __sb->sbumpc(), __eof))
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while (true)
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{
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while (_M_gcount < __n
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&& !traits_type::eq_int_type(__c, __eof))
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{
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++_M_gcount;
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__c = __sb->snextc();
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}
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if (__n == numeric_limits<streamsize>::max()
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&& !traits_type::eq_int_type(__c, __eof))
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_M_gcount = 0;
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else
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break;
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}
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if (traits_type::eq_int_type(__c, __eof))
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__err |= ios_base::eofbit;
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}
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@ -718,19 +728,32 @@ namespace std
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{
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const int_type __eof = traits_type::eof();
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__streambuf_type* __sb = this->rdbuf();
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int_type __c = __eof;
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int_type __c = __sb->sgetc();
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if (__n != numeric_limits<streamsize>::max())
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--__n;
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while (_M_gcount <= __n
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&& !traits_type::eq_int_type(__c = __sb->sbumpc(), __eof))
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while (true)
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{
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while (_M_gcount < __n
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&& !traits_type::eq_int_type(__c, __eof)
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&& !traits_type::eq_int_type(__c, __delim))
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{
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++_M_gcount;
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if (traits_type::eq_int_type(__c, __delim))
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__c = __sb->snextc();
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}
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if (__n == numeric_limits<streamsize>::max()
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&& !traits_type::eq_int_type(__c, __eof)
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&& !traits_type::eq_int_type(__c, __delim))
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_M_gcount = 0;
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else
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break;
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}
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if (traits_type::eq_int_type(__c, __eof))
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__err |= ios_base::eofbit;
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else if (traits_type::eq_int_type(__c, __delim))
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{
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++_M_gcount;
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__sb->sbumpc();
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}
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}
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catch(...)
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{ this->_M_setstate(ios_base::badbit); }
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@ -1,6 +1,6 @@
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// Input streams -*- C++ -*-
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// Copyright (C) 2004 Free Software Foundation, Inc.
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// Copyright (C) 2004, 2005 Free Software Foundation, Inc.
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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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@ -124,16 +124,14 @@ namespace std
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__streambuf_type* __sb = this->rdbuf();
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int_type __c = __sb->sgetc();
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const bool __bound = __n != numeric_limits<streamsize>::max();
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if (__bound)
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--__n;
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while (_M_gcount <= __n
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while (true)
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{
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while (_M_gcount < __n
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&& !traits_type::eq_int_type(__c, __eof))
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{
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streamsize __size = __sb->egptr() - __sb->gptr();
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if (__bound)
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__size = std::min(__size, streamsize(__n - _M_gcount + 1));
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streamsize __size = std::min(streamsize(__sb->egptr()
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- __sb->gptr()),
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streamsize(__n - _M_gcount));
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if (__size > 1)
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{
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__sb->gbump(__size);
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@ -146,6 +144,13 @@ namespace std
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__c = __sb->snextc();
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}
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}
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if (__n == numeric_limits<streamsize>::max()
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&& !traits_type::eq_int_type(__c, __eof))
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_M_gcount == 0;
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else
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break;
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}
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if (traits_type::eq_int_type(__c, __eof))
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__err |= ios_base::eofbit;
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}
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@ -177,17 +182,15 @@ namespace std
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__streambuf_type* __sb = this->rdbuf();
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int_type __c = __sb->sgetc();
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const bool __bound = __n != numeric_limits<streamsize>::max();
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if (__bound)
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--__n;
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while (_M_gcount <= __n
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while (true)
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{
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while (_M_gcount < __n
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&& !traits_type::eq_int_type(__c, __eof)
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&& !traits_type::eq_int_type(__c, __delim))
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{
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streamsize __size = __sb->egptr() - __sb->gptr();
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if (__bound)
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__size = std::min(__size, streamsize(__n - _M_gcount + 1));
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streamsize __size = std::min(streamsize(__sb->egptr()
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- __sb->gptr()),
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streamsize(__n - _M_gcount));
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if (__size > 1)
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{
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const char_type* __p = traits_type::find(__sb->gptr(),
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@ -205,6 +208,14 @@ namespace std
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__c = __sb->snextc();
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}
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}
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if (__n == numeric_limits<streamsize>::max()
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&& !traits_type::eq_int_type(__c, __eof)
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&& !traits_type::eq_int_type(__c, __delim))
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_M_gcount = 0;
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else
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break;
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}
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if (traits_type::eq_int_type(__c, __eof))
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__err |= ios_base::eofbit;
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else if (traits_type::eq_int_type(__c, __delim))
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@ -391,16 +402,14 @@ namespace std
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__streambuf_type* __sb = this->rdbuf();
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int_type __c = __sb->sgetc();
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const bool __bound = __n != numeric_limits<streamsize>::max();
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if (__bound)
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--__n;
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while (_M_gcount <= __n
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while (true)
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{
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while (_M_gcount < __n
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&& !traits_type::eq_int_type(__c, __eof))
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{
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streamsize __size = __sb->egptr() - __sb->gptr();
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if (__bound)
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__size = std::min(__size, streamsize(__n - _M_gcount + 1));
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streamsize __size = std::min(streamsize(__sb->egptr()
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- __sb->gptr()),
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streamsize(__n - _M_gcount));
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if (__size > 1)
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{
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__sb->gbump(__size);
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@ -413,6 +422,13 @@ namespace std
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__c = __sb->snextc();
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}
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}
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if (__n == numeric_limits<streamsize>::max()
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&& !traits_type::eq_int_type(__c, __eof))
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_M_gcount == 0;
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else
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break;
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}
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if (traits_type::eq_int_type(__c, __eof))
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__err |= ios_base::eofbit;
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}
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@ -444,17 +460,15 @@ namespace std
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__streambuf_type* __sb = this->rdbuf();
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int_type __c = __sb->sgetc();
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const bool __bound = __n != numeric_limits<streamsize>::max();
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if (__bound)
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--__n;
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while (_M_gcount <= __n
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while (true)
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{
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while (_M_gcount < __n
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&& !traits_type::eq_int_type(__c, __eof)
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&& !traits_type::eq_int_type(__c, __delim))
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{
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streamsize __size = __sb->egptr() - __sb->gptr();
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if (__bound)
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__size = std::min(__size, streamsize(__n - _M_gcount + 1));
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streamsize __size = std::min(streamsize(__sb->egptr()
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- __sb->gptr()),
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streamsize(__n - _M_gcount));
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if (__size > 1)
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{
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const char_type* __p = traits_type::find(__sb->gptr(),
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@ -472,6 +486,14 @@ namespace std
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__c = __sb->snextc();
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}
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}
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if (__n == numeric_limits<streamsize>::max()
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&& !traits_type::eq_int_type(__c, __eof)
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&& !traits_type::eq_int_type(__c, __delim))
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_M_gcount = 0;
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else
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break;
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}
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if (traits_type::eq_int_type(__c, __eof))
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__err |= ios_base::eofbit;
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else if (traits_type::eq_int_type(__c, __delim))
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