From: Jonathan Wakely <jwakely@redhat.com>
Date: Fri, 12 Feb 2021 10:36:18 +0000 (+0000)
Subject: libstdc++: Add unused attributes to shared_ptr functions
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=87eaa3c525eb65775e6d77403b83a273a2397099;p=gcc.git

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 15707f8e74a..b24900b2008 100644
--- 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 13e2d520199..4678fbeffe2 100644
--- 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);