[Patch, libstdc++/64239] Use std::swap instead of swap in regex

[Tim Shen]

Bootstrapped and tested. It could be also patched to 4.9 branch.

Thanks!


-- 
Regards,
Tim Shen

commit dfe3a26759893849020a659b14fafe8b27e90dae
Author: timshen <tims...@google.com>
Date:   Tue Jan 6 19:30:27 2015 -0800

        PR libstdc++/64239
    
        * include/bits/regex.h (match_results<>::swap): Use std::swap
        instead of swap.
        * include/bits/regex_compiler.tcc (_Compiler<>::_M_quantifier):
        Likewise.

diff --git a/libstdc++-v3/include/bits/regex.h 
b/libstdc++-v3/include/bits/regex.h
index 9b7ed8c..b520039 100644
--- a/libstdc++-v3/include/bits/regex.h
+++ b/libstdc++-v3/include/bits/regex.h
@@ -1864,7 +1864,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
       swap(match_results& __that)
       {
        _Base_type::swap(__that);
-       swap(_M_begin, __that._M_begin);
+       std::swap(_M_begin, __that._M_begin);
       }
       //@}
 
diff --git a/libstdc++-v3/include/bits/regex_compiler.tcc 
b/libstdc++-v3/include/bits/regex_compiler.tcc
index 57bafa3..33d7118 100644
--- a/libstdc++-v3/include/bits/regex_compiler.tcc
+++ b/libstdc++-v3/include/bits/regex_compiler.tcc
@@ -276,7 +276,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
                {
                  auto& __tmp = (*_M_nfa)[__stack.top()];
                  __stack.pop();
-                 swap(__tmp._M_next, __tmp._M_alt);
+                 std::swap(__tmp._M_next, __tmp._M_alt);
                }
            }
          _M_stack.push(__e);