391cd0955e
2003-02-24 Paolo Carlini <pcarlini@unitus.it> Nathan Myers <ncm@cantrip.org> PR libstdc++/9404, PR libstdc++/9701 (partial) (aka pptr == epptr implies overflow) * include/bits/fstream.tcc (_M_allocate_internal_buffer): Consistently, _M_out_end points to the end of the buffer just created. (overflow): Tweak to use _M_out_buf_size(). (_M_convert_to_external): The role of the old _M_out_end is now played by _M_out_lim. (_M_really_overflow): Likewise. (seekoff): Likewise. (setbuf): _M_out_end points to the end of the external buffer. * include/bits/sstream.tcc (overflow): Rewrote, taking into account the resolution of DR 169 (TC). (seekoff): Use _M_string.capacity(); ios_base::end is now _M_out_lim. (seekpos): Use _M_string.capacity(); tweak. * include/bits/streambuf.tcc (sputc, xsputn): Remove comments. * include/std/std_fstream.h (sync): The role of the old _M_out_end is now played by _M_out_lim. (_M_set_indeterminate): Use _M_set_determinate. (_M_set_determinate): _M_out_end is now _M_out_lim. (_M_is_indeterminate): Likewise. * include/std/std_sstream.h (str()): _M_out_end is now _M_out_lim. (_M_stringbuf_init): Don't set _M_buf_size, unused for sstreams, which have the information readily available as _M_string.capacity(); for ate and app modes, pass the string size to _M_really_sync. (_M_really_sync): Consistently set _M_out_end and _M_out_lim, to point to the end of the buffer (i.e., epptr) and to the string end, respectively. * include/std/std_streambuf.h: tweak comments, add _M_out_lim, which points to the right limit of the used put area. (_M_out_cur_move): The role of the old _M_out_end is now played by _M_out_lim. (_M_out_buf_size): Simplify: now (when _M_out_cur) return simply _M_out_end - _M_out_cur (i.e., pptr), _very_ close to the letter of the standard. (basic_streambuf()): Initialize _M_out_lim too. * testsuite/27_io/filebuf_virtuals.cc (test10): Trivial tweak. * testsuite/27_io/filebuf_virtuals.cc (test11): Add. * testsuite/27_io/stringbuf_virtuals.cc (test09): Add. Co-Authored-By: Nathan Myers <ncm@cantrip.org> From-SVN: r63367
167 lines
3.8 KiB
C++
167 lines
3.8 KiB
C++
// 2001-05-21 Benjamin Kosnik <bkoz@redhat.com>
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// Copyright (C) 2001, 2002, 2003 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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// 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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// 27.7.1.3 Overridden virtual functions
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#include <sstream>
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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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bool test = true;
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char buf[512];
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const char* strlit = "how to tell a story and other essays: mark twain";
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const size_t strlitsize = std::strlen(strlit);
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stringbuf sbuf(ios_base::out);
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sbuf.pubsetbuf(buf, strlitsize);
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sbuf.sputn(strlit, strlitsize);
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VERIFY( std::strncmp(strlit, buf, strlitsize) != 0 );
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}
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void test02(std::stringbuf& in, bool pass)
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{
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using namespace std;
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typedef streambuf::pos_type pos_type;
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typedef streambuf::off_type off_type;
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pos_type bad = pos_type(off_type(-1));
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pos_type p = 0;
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// seekoff
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p = in.pubseekoff(0, ios_base::beg, ios_base::in);
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if (pass)
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VERIFY( p != bad );
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p = in.pubseekoff(0, ios_base::beg, ios_base::out);
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VERIFY( p == bad );
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p = in.pubseekoff(0, ios_base::beg);
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VERIFY( p == bad );
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// seekpos
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p = in.pubseekpos(0, ios_base::in);
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if (pass)
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VERIFY( p != bad );
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p = in.pubseekpos(0, ios_base::out);
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VERIFY( p == bad );
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p = in.pubseekpos(0);
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VERIFY( p == bad );
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}
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// libstdc++/9322
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void test08()
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{
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using std::locale;
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bool test = true;
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locale loc;
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std::stringbuf ob;
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VERIFY( ob.getloc() == loc );
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locale::global(locale("en_US"));
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VERIFY( ob.getloc() == loc );
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locale loc_de ("de_DE");
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locale ret = ob.pubimbue(loc_de);
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VERIFY( ob.getloc() == loc_de );
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VERIFY( ret == loc );
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locale::global(loc);
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VERIFY( ob.getloc() == loc_de );
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}
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bool over_called;
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class Derived_stringbuf : public std::stringbuf
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{
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public:
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int_type overflow(int_type c)
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{
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over_called = true;
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return std::stringbuf::overflow(c);
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}
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const char_type* pub_epptr() const
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{
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return epptr();
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}
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const char_type* pub_pptr() const
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{
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return pptr();
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}
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};
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// libstdc++/9404
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void test09()
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{
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bool test = true;
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bool over_expected;
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// sputc
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Derived_stringbuf dsbuf_01;
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over_called = false;
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dsbuf_01.sputc('i');
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VERIFY( over_called );
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over_expected = dsbuf_01.pub_epptr() == dsbuf_01.pub_pptr();
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over_called = false;
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dsbuf_01.sputc('v');
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VERIFY( (!over_expected && !over_called)
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|| (over_expected && over_called) );
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dsbuf_01.sputc('i');
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VERIFY( dsbuf_01.str() == "ivi" ); // Sanity check.
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// sputn
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Derived_stringbuf dsbuf_02;
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over_called = false;
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dsbuf_02.sputn("sonne's", 7);
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VERIFY( over_called );
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over_expected = dsbuf_02.pub_epptr() == dsbuf_02.pub_pptr();
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over_called = false;
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dsbuf_02.sputn(" peak", 5);
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VERIFY( (!over_expected && !over_called)
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|| (over_expected && over_called) );
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VERIFY( dsbuf_02.str() == "sonne's peak" ); // Sanity check.
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}
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int main()
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{
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using namespace std;
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test01();
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// movie star, submarine scientist!
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stringbuf in1("Hedy Lamarr", ios_base::in);
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stringbuf in2(ios_base::in);
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stringbuf in3("", ios_base::in);
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test02(in1, true);
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test02(in2, false);
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test02(in3, false);
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test08();
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test09();
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return 0;
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}
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