Fix regex multiple consecutive quantifiers bug.

commit ceffce7f974d3ed58ba217807ffd431147ce717f
Author: tim timshen91 [ at ] gmail.com
Date: Sat Jan 18 23:35:09 2014 -0500

2014-01-19 Tim Shen timshen91 [ at ] 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/empty_range.cc: New.

diff --git a/libstdc++-v3/include/bits/regex_compiler.h b/libstdc++-v3/include/bits/regex_compiler.h
index 216f8fb..fe2e5f1 100644
--- a/libstdc++-v3/include/bits/regex_compiler.h
+++ b/libstdc++-v3/include/bits/regex_compiler.h
@@ -83,7 +83,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
bool
_M_assertion();

- void
+ bool
_M_quantifier();

bool
diff --git a/libstdc++-v3/include/bits/regex_compiler.tcc b/libstdc++-v3/include/bits/regex_compiler.tcc
index 621e43f..128dac1 100644
--- a/libstdc++-v3/include/bits/regex_compiler.tcc
+++ b/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...)\
diff --git a/libstdc++-v3/testsuite/28_regex/basic_regex/empty_range.cc b/libstdc++-v3/testsuite/28_regex/basic_regex/empty_range.cc
new file mode 100644
index 0000000..f61ae77
--- /dev/null
+++ b/libstdc++-v3/testsuite/28_regex/basic_regex/empty_range.cc
@@ -0,0 +1,35 @@
+// { dg-options "-std=gnu++11" }

+// Copyright (C) 2013-2014 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/>.

+// 28.11.2 regex_match
+// Tests ECMAScript empty range.

+#include <regex>
+#include <testsuite_hooks.h>
+#include <testsuite_regex.h>

+using namespace __gnu_test;
+using namespace std;

+int
+main()
+{
+ regex re("a++");
+ return 0;
+}