[committed] libstdc++: Silence -Woverloaded-virtual warning in cxx11-ios_failure.cc

[Jonathan Wakely]

Tested x86_64-linux. Pushed to trunk.

-- >8 --

libstdc++-v3/ChangeLog:

        * src/c++11/cxx11-ios_failure.cc (__iosfail_type_info): Unhide
        the three-arg overload of __do_upcast.
---
 libstdc++-v3/src/c++11/cxx11-ios_failure.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libstdc++-v3/src/c++11/cxx11-ios_failure.cc 
b/libstdc++-v3/src/c++11/cxx11-ios_failure.cc
index bd3fd556bd4..70dddc82389 100644
--- a/libstdc++-v3/src/c++11/cxx11-ios_failure.cc
+++ b/libstdc++-v3/src/c++11/cxx11-ios_failure.cc
@@ -94,6 +94,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   {
     ~__iosfail_type_info();
 
+    using __si_class_type_info::__do_upcast;
+
     bool
     __do_upcast (const __class_type_info *dst_type,
                 void **obj_ptr) const override;
-- 
2.46.0