regex_compiler.h (_Comipler<>::_M_quantifier()): Fix parse error of multiple…

regex_compiler.h (_Comipler<>::_M_quantifier()): Fix parse error of multiple consecutive quantifiers like "a**".

2014-01-19  Tim Shen  <timshen91@gmail.com>

	* include/bits/regex_compiler.h (_Comipler<>::_M_quantifier()):
	Fix parse error of multiple consecutive quantifiers like "a**".
	* include/bits/regex_compiler.tcc (_Comipler<>::_M_quantifier()):
	Likewise.
	* testsuite/28_regex/basic_regex/multiple_quantifiers.cc: New.

From-SVN: r206783

libstdc++-v3/ChangeLog

+2014-01-19  Tim Shen  <timshen91@gmail.com>
+
+	* include/bits/regex_compiler.h (_Comipler<>::_M_quantifier()):
+	Fix parse error of multiple consecutive quantifiers like "a**".
+	* include/bits/regex_compiler.tcc (_Comipler<>::_M_quantifier()):
+	Likewise.
+	* testsuite/28_regex/basic_regex/multiple_quantifiers.cc: New.
+
 2014-01-17  François Dumont  <fdumont@gcc.gnu.org>
 
 	* include/profile/set.h (set): Implement C++11 allocator-aware

libstdc++-v3/include/bits/regex_compiler.h

@@ -83,7 +83,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       bool
       _M_assertion();
 
-      void
+      bool
       _M_quantifier();
 
       bool

libstdc++-v3/include/bits/regex_compiler.tcc

@@ -135,7 +135,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	return true;
       if (this->_M_atom())
 	{
-	  this->_M_quantifier();
+	  while (this->_M_quantifier());
 	  return true;
 	}
       return false;
@@ -173,7 +173,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     }
 
   template<typename _TraitsT>
-    void
+    bool
     _Compiler<_TraitsT>::
     _M_quantifier()
     {
@@ -276,6 +276,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	    }
 	  _M_stack.push(__e);
 	}
+      else
+	return false;
+      return true;
     }
 
 #define __INSERT_REGEX_MATCHER(__func, args...)\

libstdc++-v3/testsuite/28_regex/basic_regex/multiple_quantifiers.cc

+// { dg-options "-std=gnu++11" }
+
+// Copyright (C) 2014 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/>.
+
+// 28.8 basic_regex
+// Tests multiple consecutive quantifiers
+
+#include <regex>
+
+using namespace std;
+
+int
+main()
+{
+  regex re1("a++");
+  regex re2("(a+)+");
+  return 0;
+}