[Patch, libstdc++/67362] Fix non-special character for POSIX basic syntax in regex

[Tim Shen]

Bootstrapped and tested on x86_64-pc-linux-gnu.

Thanks!


-- 
Regards,
Tim Shen
-------------- next part --------------
commit e134e1a835ad15900686351cade36774593b91ea
Author: Tim Shen <timshen@google.com>
Date:   Wed Aug 26 17:51:29 2015 -0700

    	PR libstdc++/67362
    	* include/bits/regex_scanner.tcc (_Scanner<>::_M_scan_normal):
    	Always returns ordinary char token if the char isn't
    	considered a special char.
    	* testsuite/28_regex/regression.cc: New test file for collecting
    	regression testcases from, typically, bugzilla.

diff --git a/libstdc++-v3/include/bits/regex_scanner.tcc b/libstdc++-v3/include/bits/regex_scanner.tcc
index 3bcbd0f..1555669 100644
--- a/libstdc++-v3/include/bits/regex_scanner.tcc
+++ b/libstdc++-v3/include/bits/regex_scanner.tcc
@@ -99,6 +99,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       auto __c = *_M_current++;
       const char* __pos;
 
+      if (std::strchr(_M_spec_char, _M_ctype.narrow(__c, '\0')) == nullptr)
+	{
+	  _M_token = _S_token_ord_char;
+	  _M_value.assign(1, __c);
+	  return;
+	}
       if (__c == '\\')
 	{
 	  if (_M_current == _M_end)
diff --git a/libstdc++-v3/testsuite/28_regex/regression.cc b/libstdc++-v3/testsuite/28_regex/regression.cc
new file mode 100644
index 0000000..71d82d5
--- /dev/null
+++ b/libstdc++-v3/testsuite/28_regex/regression.cc
@@ -0,0 +1,42 @@
+// { dg-options "-std=gnu++11" }
+
+//
+// Copyright (C) 2015 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 <testsuite_hooks.h>
+#include <testsuite_regex.h>
+
+using namespace __gnu_test;
+using namespace std;
+
+// PR libstdc++/67362
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  regex re("((.)", regex_constants::basic);
+}
+
+int
+main()
+{
+  test01();
+  return 0;
+}
+