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[v3] Fix/split basic_filebuf/sungetc testcases
- From: Paolo Carlini <pcarlini at unitus dot it>
- To: gcc-patches at gcc dot gnu dot org
- Date: Mon, 16 Jun 2003 18:33:37 +0200
- Subject: [v3] Fix/split basic_filebuf/sungetc testcases
Hi,
tested x86-linux, reviewed by Benjamin.
Paolo.
/////////
2003-06-16 Paolo Carlini <pcarlini@unitus.it>
* testsuite/27_io/basic_filebuf/sungetc/char/1.cc: Split and
fix for missing seeks between gets and puts into...
* testsuite/27_io/basic_filebuf/sungetc/char/1-in.cc: New.
* testsuite/27_io/basic_filebuf/sungetc/char/1-io.cc: New.
* testsuite/27_io/basic_filebuf/sungetc/char/1-out.cc: New.
* testsuite/27_io/basic_filebuf/sungetc/char/2-in.cc: New.
* testsuite/27_io/basic_filebuf/sungetc/char/2-io.cc: New.
* testsuite/27_io/basic_filebuf/sungetc/char/2-out.cc: New. diff -urN libstdc++-v3-orig/testsuite/27_io/basic_filebuf/sungetc/char/1-in.cc libstdc++-v3/testsuite/27_io/basic_filebuf/sungetc/char/1-in.cc
--- libstdc++-v3-orig/testsuite/27_io/basic_filebuf/sungetc/char/1-in.cc 1970-01-01 01:00:00.000000000 +0100
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/sungetc/char/1-in.cc 2003-06-15 22:26:04.000000000 +0200
@@ -0,0 +1,71 @@
+// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 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[] = "sgetc.txt"; // file with data in it
+
+// Test overloaded virtual functions.
+void test01()
+{
+ using namespace std;
+ using namespace __gnu_cxx_test;
+ typedef std::filebuf::int_type int_type;
+ typedef filebuf::traits_type traits_type;
+
+ bool test = true;
+ int_type c1, c2, c3;
+
+ // int_type sungetc()
+ // if in_cur not avail, return pbackfail(), else decrement and
+ // return to_int_type(*gptr())
+
+ // in
+ {
+ constraint_filebuf fb_01;
+ fb_01.open(name_01, ios::in);
+ VERIFY( !fb_01.write_position() );
+ c1 = fb_01.sbumpc();
+ VERIFY( c1 == '/' );
+ c2 = fb_01.sungetc();
+ VERIFY( c2 == c1 );
+ c3 = fb_01.sgetc();
+ VERIFY( c3 == c2 );
+ fb_01.pubseekoff(2, ios_base::beg, ios_base::in);
+ c1 = fb_01.sgetc();
+ VERIFY( c1 == ' ' );
+ c2 = fb_01.sungetc();
+ VERIFY( c2 == traits_type::not_eof(traits_type::eof()) );
+ VERIFY( !fb_01.write_position() );
+ }
+}
+
+main()
+{
+ test01();
+ return 0;
+}
diff -urN libstdc++-v3-orig/testsuite/27_io/basic_filebuf/sungetc/char/1-io.cc libstdc++-v3/testsuite/27_io/basic_filebuf/sungetc/char/1-io.cc
--- libstdc++-v3-orig/testsuite/27_io/basic_filebuf/sungetc/char/1-io.cc 1970-01-01 01:00:00.000000000 +0100
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/sungetc/char/1-io.cc 2003-06-15 21:27:52.000000000 +0200
@@ -0,0 +1,84 @@
+// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 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[] = "tmp_sungetc_1io.tst"; // empty file, need to create
+
+void test01()
+{
+ using namespace std;
+ using namespace __gnu_cxx_test;
+
+ typedef filebuf::int_type int_type;
+ typedef filebuf::traits_type traits_type;
+ typedef size_t size_type;
+
+ bool test = true;
+ streamsize strmsz_1, strmsz_2;
+ int_type c1, c2, c3;
+
+ // int_type sungetc()
+ // if in_cur not avail, return pbackfail(), else decrement and
+ // return to_int_type(*gptr())
+
+ // in | out
+ {
+ constraint_filebuf fb_01;
+ fb_01.open(name_01, ios_base::out | ios_base::in | ios_base::trunc);
+ VERIFY( fb_01.write_position() );
+ VERIFY( !fb_01.read_position() );
+ fb_01.sputc('u');
+ fb_01.sputc('v');
+ fb_01.pubseekoff(-1, std::ios_base::end);
+ c3 = fb_01.sbumpc();
+ strmsz_1 = fb_01.in_avail();
+ c2 = fb_01.sungetc();
+ strmsz_2 = fb_01.in_avail();
+ VERIFY( c2 == 'v' ); // VERIFY( c2 != traits_type::eof() );
+ VERIFY( strmsz_1 + 1 == strmsz_2 );
+ //test for _in_cur == _in_end
+ fb_01.pubseekoff(0, std::ios_base::end);
+ strmsz_1 = fb_01.in_avail(); // -1 cuz at the end
+ c1 = fb_01.sgetc();
+ c2 = fb_01.sungetc();
+ strmsz_2 = fb_01.in_avail(); // 1
+ c3 = fb_01.sgetc();
+ VERIFY( c1 != c2 );
+ // VERIFY( c2 == c3 || c2 == traits_type::not_eof(int(c3)) );
+ VERIFY( strmsz_2 != strmsz_1 );
+ VERIFY( strmsz_2 == 1 );
+ VERIFY( fb_01.write_position() );
+ VERIFY( fb_01.read_position() );
+ }
+}
+
+main()
+{
+ test01();
+ return 0;
+}
diff -urN libstdc++-v3-orig/testsuite/27_io/basic_filebuf/sungetc/char/1-out.cc libstdc++-v3/testsuite/27_io/basic_filebuf/sungetc/char/1-out.cc
--- libstdc++-v3-orig/testsuite/27_io/basic_filebuf/sungetc/char/1-out.cc 1970-01-01 01:00:00.000000000 +0100
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/sungetc/char/1-out.cc 2003-06-15 20:27:36.000000000 +0200
@@ -0,0 +1,70 @@
+// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 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[] = "tmp_sungetc_1out.tst"; // empty file, need to create
+
+// Test overloaded virtual functions.
+void test01()
+{
+ using namespace std;
+ using namespace __gnu_cxx_test;
+ typedef std::filebuf::int_type int_type;
+ typedef filebuf::traits_type traits_type;
+
+ bool test = true;
+ int_type c1, c2, c3;
+
+ // int_type sungetc()
+ // if in_cur not avail, return pbackfail(), else decrement and
+ // return to_int_type(*gptr())
+
+ // out
+ {
+ constraint_filebuf fb_01; // out
+ fb_01.open(name_01, ios::out | ios::trunc);
+ VERIFY( fb_01.write_position() );
+ VERIFY( !fb_01.read_position() );
+ c1 = fb_01.sgetc();
+ VERIFY( c1 == traits_type::eof() );
+ c2 = fb_01.sungetc();
+ VERIFY( c2 == traits_type::eof() );
+ fb_01.sbumpc();
+ c1 = fb_01.sbumpc();
+ c2 = fb_01.sungetc();
+ VERIFY( c1 == c2 );
+ VERIFY( fb_01.write_position() );
+ VERIFY( !fb_01.read_position() );
+ }
+}
+
+main()
+{
+ test01();
+ return 0;
+}
diff -urN libstdc++-v3-orig/testsuite/27_io/basic_filebuf/sungetc/char/1.cc libstdc++-v3/testsuite/27_io/basic_filebuf/sungetc/char/1.cc
--- libstdc++-v3-orig/testsuite/27_io/basic_filebuf/sungetc/char/1.cc 2003-05-12 23:01:39.000000000 +0200
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/sungetc/char/1.cc 1970-01-01 01:00:00.000000000 +0100
@@ -1,178 +0,0 @@
-// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-// USA.
-
-// 27.8.1.4 Overridden virtual functions
-
-#include <fstream>
-#include <testsuite_hooks.h>
-
-// @require@ %-*.tst %-*.txt
-// @diff@ %-*.tst %*.txt
-
-// NB: This test assumes that _M_buf_size == 40, and not the usual
-// buffer_size length of BUFSIZ (8192), so that overflow/underflow can be
-// simulated a bit more readily.
-// NRB (Nota Really Bene): setting it to 40 breaks the test, as intended.
-const int buffer_size = 8192;
-//const int buffer_size = 40;
-
-const char name_01[] = "filebuf_virtuals-1.txt"; // file with data in it
-const char name_02[] = "filebuf_virtuals-2.txt"; // empty file, need to create
-const char name_03[] = "filebuf_virtuals-3.txt"; // empty file, need to create
-
-class derived_filebuf: public std::filebuf
-{
- public:
- void
- set_size(int_type __size) { _M_buf_size = __size; }
-};
-
-derived_filebuf fb_01; // in
-derived_filebuf fb_02; // out
-derived_filebuf fb_03; // in | out
-
-// Initialize filebufs to be the same size regardless of platform.
-void test03()
-{
- fb_01.set_size(buffer_size);
- fb_02.set_size(buffer_size);
- fb_03.set_size(buffer_size);
-}
-
-// Test overloaded virtual functions.
-void test05()
-{
- typedef std::filebuf::int_type int_type;
- typedef std::filebuf::traits_type traits_type;
- typedef std::filebuf::pos_type pos_type;
- typedef std::filebuf::off_type off_type;
- typedef size_t size_type;
-
- bool test = true;
- std::filebuf f_tmp;
- std::streamsize strmsz_1, strmsz_2;
- std::streamoff strmof_1, strmof_2;
- int i = 0, j = 0, k = 0;
-
- fb_01.open(name_01, std::ios_base::in);
- fb_02.open(name_02, std::ios_base::out | std::ios_base::trunc);
- fb_03.open(name_03, std::ios_base::out | std::ios_base::in | std::ios_base::trunc);
-
- int_type c1 = fb_01.sbumpc();
- int_type c2 = fb_02.sbumpc();
- int_type c3 = fb_01.sbumpc();
- int_type c4 = fb_02.sbumpc();
- int_type c5 = fb_03.sbumpc();
- int_type c6 = fb_01.sgetc();
- int_type c7 = fb_02.sgetc();
- int_type c8 = fb_01.sgetc();
- int_type c9 = fb_02.sgetc();
-
- // PUT
- strmsz_1 = fb_03.sputn("racadabras", 10);//"abracadabras or what?"
- strmsz_2 = fb_03.sputn(", i wanna reach out and", 10);
- strmsz_1 = fb_02.sputn("racadabras", 10);
- strmsz_1 = fb_01.sputn("racadabra", 10);
-
- // PUTBACK
- // int_type pbfail(int_type c)
- // called when gptr() null, gptr() == eback(), or traits::eq(*gptr, c) false
- // "pending sequence" is:
- // 1) everything as defined in underflow
- // 2) + if (traits::eq_int_type(c, traits::eof()), then input
- // sequence is backed up one char before the pending sequence is
- // determined.
- // 3) + if (not 2) then c is prepended. Left unspecified is
- // whether the input sequence is backedup or modified in any way
- // returns traits::eof() for failure, unspecified other value for success
-
- // int_type sputbackc(char_type c)
- // if in_cur not avail || ! traits::eq(c, gptr() [-1]), return pbfail
- // otherwise decrements in_cur and returns *gptr()
- c1 = fb_03.sgetc(); // -1
- c2 = fb_03.sputbackc('z');
- strmsz_2 = fb_03.in_avail();
- c3 = fb_03.sgetc();
- //test for _in_cur == _in_beg
- // fb_03._M_out_beg = "bd23456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZracada" etc
- fb_03.pubseekoff(10, std::ios_base::beg,
- std::ios_base::in | std::ios_base::out);
- fb_03.sputc('m');
- strmsz_1 = fb_03.in_avail();
- c1 = fb_03.sgetc();
- fb_03.snextc();
- c2 = fb_03.sputbackc('z');
- strmsz_2 = fb_03.in_avail();
- c3 = fb_03.sgetc();
- fb_03.snextc();
- fb_03.sputc('u');
- fb_03.sputc('v');
- fb_03.sputc('a');
- strmsz_1 = fb_03.in_avail();
- c2 = fb_03.sputbackc('a');
- strmsz_2 = fb_03.in_avail();
- c3 = fb_03.sgetc();
- //test for ios_base::out
- c1 = fb_02.sgetc(); // undefined
- c2 = fb_02.sputbackc('a');
-
- // int_type sungetc()
- // if in_cur not avail, return pbackfail(), else decrement and
- // return to_int_type(*gptr())
- // fb_03._M_out_beg = "uvaacadabras, i wannaZ[\\]^_`abcdefghijkl"
- // fb_03._M_out_cur = "aacadabras, i wannaZ[\\]^_`abcdefghijkl"
- strmsz_1 = fb_03.in_avail();
- c2 = fb_03.sungetc(); // delete the 'a'
- strmsz_2 = fb_03.in_avail();
- VERIFY( c2 == 'v' ); // VERIFY( c2 != traits_type::eof() );
- VERIFY( strmsz_1 + 1 == strmsz_2 );
- //test for _in_cur == _in_beg
- for (int i = 50; i < 32 + 29; ++i)
- fb_02.sputc(char(i));
- fb_02.pubseekoff(0, std::ios_base::beg, std::ios_base::out);
- c1 = fb_02.sgetc();
- strmsz_1 = fb_02.in_avail();
- c2 = fb_02.sungetc();
- c3 = fb_02.sgetc();
- strmsz_2 = fb_02.in_avail();
- VERIFY( c1 == c2 );
- VERIFY( c2 == c3 );
- VERIFY( c1 == traits_type::eof() );
- VERIFY( strmsz_1 == strmsz_2 );
- //test for _in_cur == _in_end
- fb_03.pubseekoff(0, std::ios_base::end);
- strmsz_1 = fb_03.in_avail(); // -1 cuz at the end
- c1 = fb_03.sgetc();
- c2 = fb_03.sungetc();
- strmsz_2 = fb_03.in_avail(); // 1
- c3 = fb_03.sgetc();
- VERIFY( c1 != c2 );
- // VERIFY( c2 == c3 || c2 == traits_type::not_eof(int(c3)) );
- VERIFY( strmsz_2 != strmsz_1 );
- VERIFY( strmsz_2 == 1 );
- //test for ios_base::out
-}
-
-main()
-{
- test03();
- test05();
- return 0;
-}
diff -urN libstdc++-v3-orig/testsuite/27_io/basic_filebuf/sungetc/char/2-in.cc libstdc++-v3/testsuite/27_io/basic_filebuf/sungetc/char/2-in.cc
--- libstdc++-v3-orig/testsuite/27_io/basic_filebuf/sungetc/char/2-in.cc 1970-01-01 01:00:00.000000000 +0100
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/sungetc/char/2-in.cc 2003-06-15 22:26:22.000000000 +0200
@@ -0,0 +1,72 @@
+// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 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[] = "sgetc.txt"; // file with data in it
+
+// Test overloaded virtual functions.
+void test01()
+{
+ using namespace std;
+ using namespace __gnu_cxx_test;
+ typedef std::filebuf::int_type int_type;
+ typedef filebuf::traits_type traits_type;
+
+ bool test = true;
+ int_type c1, c2, c3;
+
+ // int_type sungetc()
+ // if in_cur not avail, return pbackfail(), else decrement and
+ // return to_int_type(*gptr())
+
+ // in
+ {
+ constraint_filebuf fb_01;
+ fb_01.pubsetbuf(0, 0);
+ fb_01.open(name_01, ios::in);
+ VERIFY( fb_01.unbuffered() );
+ c1 = fb_01.sbumpc();
+ VERIFY( c1 == '/' );
+ c2 = fb_01.sungetc();
+ VERIFY( c2 == c1 );
+ c3 = fb_01.sgetc();
+ VERIFY( c3 == c2 );
+ fb_01.pubseekoff(2, ios_base::beg, ios_base::in);
+ c1 = fb_01.sgetc();
+ VERIFY( c1 == ' ' );
+ c2 = fb_01.sungetc();
+ VERIFY( c2 == traits_type::not_eof(traits_type::eof()) );
+ VERIFY( fb_01.unbuffered() );
+ }
+}
+
+main()
+{
+ test01();
+ return 0;
+}
diff -urN libstdc++-v3-orig/testsuite/27_io/basic_filebuf/sungetc/char/2-io.cc libstdc++-v3/testsuite/27_io/basic_filebuf/sungetc/char/2-io.cc
--- libstdc++-v3-orig/testsuite/27_io/basic_filebuf/sungetc/char/2-io.cc 1970-01-01 01:00:00.000000000 +0100
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/sungetc/char/2-io.cc 2003-06-15 22:49:02.000000000 +0200
@@ -0,0 +1,83 @@
+// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 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[] = "tmp_sungetc_2io.tst"; // empty file, need to create
+
+void test01()
+{
+ using namespace std;
+ using namespace __gnu_cxx_test;
+
+ typedef filebuf::int_type int_type;
+ typedef filebuf::traits_type traits_type;
+ typedef size_t size_type;
+
+ bool test = true;
+ streamsize strmsz_1, strmsz_2;
+ int_type c1, c2, c3;
+
+ // int_type sungetc()
+ // if in_cur not avail, return pbackfail(), else decrement and
+ // return to_int_type(*gptr())
+
+ // in | out
+ {
+ constraint_filebuf fb_01;
+ fb_01.pubsetbuf(0, 0);
+ fb_01.open(name_01, ios_base::out | ios_base::in | ios_base::trunc);
+ VERIFY( fb_01.unbuffered() );
+ fb_01.sputc('u');
+ fb_01.sputc('v');
+ fb_01.pubseekoff(-1, std::ios_base::end);
+ c3 = fb_01.sbumpc();
+ strmsz_1 = fb_01.in_avail();
+ c2 = fb_01.sungetc();
+ strmsz_2 = fb_01.in_avail();
+ VERIFY( c2 == 'v' ); // VERIFY( c2 != traits_type::eof() );
+ VERIFY( strmsz_1 + 1 == strmsz_2 );
+ //test for _in_cur == _in_end
+ fb_01.pubseekoff(0, std::ios_base::end);
+ strmsz_1 = fb_01.in_avail(); // -1 cuz at the end
+ c1 = fb_01.sgetc();
+ c2 = fb_01.sungetc();
+ strmsz_2 = fb_01.in_avail(); // 1
+ c3 = fb_01.sgetc();
+ VERIFY( c1 != c2 );
+ // VERIFY( c2 == c3 || c2 == traits_type::not_eof(int(c3)) );
+ VERIFY( strmsz_2 != strmsz_1 );
+ VERIFY( strmsz_2 == 1 );
+ VERIFY( fb_01.unbuffered() );
+ }
+}
+
+main()
+{
+ test01();
+ return 0;
+}
diff -urN libstdc++-v3-orig/testsuite/27_io/basic_filebuf/sungetc/char/2-out.cc libstdc++-v3/testsuite/27_io/basic_filebuf/sungetc/char/2-out.cc
--- libstdc++-v3-orig/testsuite/27_io/basic_filebuf/sungetc/char/2-out.cc 1970-01-01 01:00:00.000000000 +0100
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/sungetc/char/2-out.cc 2003-06-15 20:27:53.000000000 +0200
@@ -0,0 +1,71 @@
+// 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// 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[] = "tmp_sungetc_2out.tst"; // empty file, need to create
+
+// Test overloaded virtual functions.
+void test01()
+{
+ using namespace std;
+ using namespace __gnu_cxx_test;
+ typedef std::filebuf::int_type int_type;
+ typedef filebuf::traits_type traits_type;
+
+ bool test = true;
+ int_type c1, c2, c3;
+
+ // int_type sungetc()
+ // if in_cur not avail, return pbackfail(), else decrement and
+ // return to_int_type(*gptr())
+
+ // out
+ {
+ constraint_filebuf fb_01; // out
+ fb_01.pubsetbuf(0, 0);
+ fb_01.open(name_01, ios::out | ios::trunc);
+ VERIFY( fb_01.unbuffered() );
+ VERIFY( !fb_01.read_position() );
+ c1 = fb_01.sgetc();
+ VERIFY( c1 == traits_type::eof() );
+ c2 = fb_01.sungetc();
+ VERIFY( c2 == traits_type::eof() );
+ fb_01.sbumpc();
+ c1 = fb_01.sbumpc();
+ c2 = fb_01.sungetc();
+ VERIFY( c1 == c2 );
+ VERIFY( fb_01.unbuffered() );
+ VERIFY( !fb_01.read_position() );
+ }
+}
+
+main()
+{
+ test01();
+ return 0;
+}