--- /dev/null
+// Copyright (C) 2005, 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/>.
+
+
+#include <cstdio>
+#include <fstream>
+#include <string>
+#include <testsuite_performance.h>
+
+// libstdc++/22515
+int main()
+{
+ using namespace std;
+ using namespace __gnu_test;
+
+ time_counter time;
+ resource_counter resource;
+
+ const char filename[] = "tmp_perf_chars.txt";
+ const unsigned lines = 200000;
+ const unsigned line_length = 200;
+
+ char* line = new char[line_length + 2];
+
+ // Construct data.
+ {
+ memset(line, 'x', line_length);
+ line[line_length] = '\n';
+ line[line_length + 1] = '\0';
+
+ ofstream out(filename);
+ for (unsigned i = 0; i < lines; ++i)
+ out << line;
+ }
+
+ // operator>>(basic_istream<char>& __in, basic_string<char>& __str)
+ {
+ start_counters(time, resource);
+ for (int iter = 0; iter < 25; ++iter)
+ {
+ ifstream file(filename);
+ string string_line;
+
+ while (file >> string_line);
+ }
+ stop_counters(time, resource);
+ report_performance(__FILE__, "string&", time, resource);
+ clear_counters(time, resource);
+ }
+
+ // operator>>(basic_istream<char>& __in, char* __s)
+ {
+ start_counters(time, resource);
+ for (int iter = 0; iter < 25; ++iter)
+ {
+ ifstream file(filename);
+
+ while (file >> line);
+ }
+ stop_counters(time, resource);
+ report_performance(__FILE__, "char*", time, resource);
+ clear_counters(time, resource);
+ }
+
+ delete[] line;
+ unlink(filename);
+ return 0;
+}