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

libstdc++-v3/ChangeLog:

	* src/c++11/cxx11-ios_failure.cc (__iosfail_type_info): Unhide
	the three-arg overload of __do_upcast.

(cherry picked from commit d842eb5ee6cb4d8a2795730ac88c4c2960f94bf4)

diff --git a/libstdc++-v3/src/c++11/cxx11-ios_failure.cc b/libstdc++-v3/src/c++11/cxx11-ios_failure.cc
index bd3fd556bd43bddd10056935cde0f4cc4dbb7463..70dddc82389e2c1ab484a10ea0cd14c631e6b6b1 100644 (file)
--- 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;