Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / testsuite / 27_io / basic_filebuf / sgetn / char / 1-in.cc

diff --git a/libstdc++-v3/testsuite/27_io/basic_filebuf/sgetn/char/1-in.cc b/libstdc++-v3/testsuite/27_io/basic_filebuf/sgetn/char/1-in.cc
new file mode 100644 (file)
index 0000000..23f438f
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_filebuf/sgetn/char/1-in.cc
@@ -0,0 +1,91 @@
+// 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
+
+// Copyright (C) 2001, 2002, 2003, 2006, 2009 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 3, 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 COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 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
+
+// { dg-require-fileio "" }
+
+#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] = "";
+  char buffer[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;
+    // Need this since BUFSIZ is only guaranteed >= 255 and we want
+    // to trigger the same underflow situation everywhere.
+    fb_01.pubsetbuf(buffer, 8192);
+    fb_01.open(name_01, ios_base::in);
+    VERIFY( !fb_01.write_position() );
+    strmsz_1 = fb_01.in_avail(); // 8261
+    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();
+    strmsz_2 = fb_01.sgetn(carray2, strmsz_1 + 5);
+    VERIFY( strmsz_1 == strmsz_2 - 5 ); 
+    c4 = fb_01.sgetc(); // buffer should have underflowed from above.
+    VERIFY( c4 == 'e' );
+    strmsz_1 = fb_01.in_avail();
+    VERIFY( strmsz_1 > 0 );
+    strmsz_2 = fb_01.sgetn(carray2, strmsz_1 + 5);
+    VERIFY( strmsz_1 == strmsz_2 ); //at the end of the actual file 
+    VERIFY( !fb_01.write_position() );
+    VERIFY( !fb_01.read_position() );
+  }
+}
+
+int main() 
+{
+  test05();
+  return 0;
+}