re PR libstdc++/58737 (leak in std::regex_match)

2013-10-15  Tim Shen  <timshen91@gmail.com>

	PR libstdc++/58737
	* include/bits/regex_automaton.h (_Automaton<>::~_Automaton): Fix memory
	leak by adding it.
	* include/bits/regex_executor.h (_Executor<>::~_Executor): Likewise.

From-SVN: r203610

libstdc++-v3/ChangeLog

+2013-10-15  Tim Shen  <timshen91@gmail.com>
+
+	PR libstdc++/58737
+	* include/bits/regex_automaton.h (_Automaton<>::~_Automaton): Fix memory
+	leak by adding it.
+	* include/bits/regex_executor.h (_Executor<>::~_Executor): Likewise.
+
 2013-10-11  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Update.

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

@@ -112,6 +112,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef size_t _SizeT;
 
     public:
+      virtual
+      ~_Automaton()
+      { }
+
       virtual _SizeT
       _M_sub_count() const = 0;
 

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

@@ -83,6 +83,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	       : __flags)
       { }
 
+      virtual
+      ~_Executor()
+      { }
+
       // Set matched when string exactly match the pattern.
       bool
       _M_match()