libstdc++: Add unused attributes to shared_ptr functions

This avoids some warnings when building with -fno-rtti because the
function parameters are only used when RTTI is enabled.

libstdc++-v3/ChangeLog:

	* include/bits/shared_ptr_base.h (__shared_ptr::_M_get_deleter):
	Add unused attribute to parameter.
	* src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq):
	Likewise.

diff --git a/libstdc++-v3/include/bits/shared_ptr_base.h b/libstdc++-v3/include/bits/shared_ptr_base.h
index 15707f8e74a52569a040284d62640eb47ae6735c..b24900b20084587de624950f42e3701f306f314f 100644 (file)
--- a/libstdc++-v3/include/bits/shared_ptr_base.h
+++ b/libstdc++-v3/include/bits/shared_ptr_base.h
@@ -450,7 +450,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       }
 
       virtual void*
-      _M_get_deleter(const std::type_info& __ti) noexcept
+      _M_get_deleter(const type_info& __ti [[__gnu__::__unused__]]) noexcept
       {
 #if __cpp_rtti
        // _GLIBCXX_RESOLVE_LIB_DEFECTS

diff --git a/libstdc++-v3/src/c++11/shared_ptr.cc b/libstdc++-v3/src/c++11/shared_ptr.cc
index 13e2d520199b431368e94dde1ee65be3ba60a084..4678fbeffe227c3743b5a3d2b1ac598849d41866 100644 (file)
--- a/libstdc++-v3/src/c++11/shared_ptr.cc
+++ b/libstdc++-v3/src/c++11/shared_ptr.cc
@@ -97,7 +97,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 #endif
 
   bool
-  _Sp_make_shared_tag::_S_eq(const type_info& ti) noexcept
+  _Sp_make_shared_tag::_S_eq(const type_info& ti [[gnu::unused]]) noexcept
   {
 #if __cpp_rtti
     return ti == typeid(_Sp_make_shared_tag);