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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [libstdc++-v3/] [testsuite/] [27_io/] [basic_filebuf/] [sgetn/] [char/] [2-in.cc] - Rev 19
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// 2001-05-21 Benjamin Kosnik <bkoz@redhat.com> // Copyright (C) 2001, 2002, 2003 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, // USA. // The ARM simulator does not provide support for "fstat", which // causes "in_avail" to return an incorrect value. // { dg-do run { xfail arm*-*-elf arm*-*-eabi } } // 27.8.1.4 Overridden virtual functions #include <fstream> #include <testsuite_hooks.h> #include <testsuite_io.h> // @require@ %-*.tst %-*.txt // @diff@ %-*.tst %*.txt const char name_01[] = "sgetn.txt"; // file with data in it // Test overloaded virtual functions. void test05() { using namespace std; using namespace __gnu_test; typedef filebuf::int_type int_type; typedef filebuf::traits_type traits_type; bool test __attribute__((unused)) = true; streamsize strmsz_1, strmsz_2; char carray1[13] = ""; char carray2[8192] = ""; int_type c1, c4; // streamsize sgetn(char_type *s, streamsize n) // streamsize xsgetn(char_type *s, streamsize n) // assign up to n chars to s from input sequence, indexing in_cur as // approp and returning the number of chars assigned // in { constraint_filebuf fb_01; fb_01.pubsetbuf(0, 0); fb_01.open(name_01, ios_base::in); VERIFY( fb_01.unbuffered() ); strmsz_1 = fb_01.in_avail(); strmsz_2 = fb_01.sgetn(carray1, 10); VERIFY( strmsz_2 == 10 ); strmsz_2 = fb_01.in_avail(); VERIFY( strmsz_1 > strmsz_2 ); c1 = fb_01.sgetc(); VERIFY( c1 == 'b' ); strmsz_1 = fb_01.in_avail(); // 8181 or 8250 depending on buffer strmsz_2 = fb_01.sgetn(carray2, 8181 + 5); VERIFY( 8181 == strmsz_2 - 5 ); c4 = fb_01.sgetc(); // buffer should have underflowed from above. VERIFY( c4 == 'h' ); strmsz_1 = fb_01.in_avail(); VERIFY( strmsz_1 > 0 ); strmsz_2 = fb_01.sgetn(carray2, 65 + 5); VERIFY( 65 == strmsz_2 ); // at the end of the actual file VERIFY( fb_01.unbuffered() ); } } int main() { test05(); return 0; }