From 020a03eec7054adb10396067fab69d0ace00aada Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Wed, 19 Feb 2020 12:04:53 +0000
Subject: libstdc++: Add nodiscard to polymorphic_allocator members (LWG 3304)

	* include/std/memory_resource (polymorphic_allocator::allocate_bytes)
	(polymorphic_allocator::allocate_object)
	(polymorphic_allocator::new_object): Add nodiscard attribute (LWG3304).
---
 libstdc++-v3/include/std/memory_resource | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'libstdc++-v3/include')

diff --git a/libstdc++-v3/include/std/memory_resource b/libstdc++-v3/include/std/memory_resource
index 70c56d1..73f77bd 100644
--- a/libstdc++-v3/include/std/memory_resource
+++ b/libstdc++-v3/include/std/memory_resource
@@ -178,7 +178,7 @@ namespace pmr
       { _M_resource->deallocate(__p, __n * sizeof(_Tp), alignof(_Tp)); }
 
 #if __cplusplus > 201703L
-      void*
+      [[nodiscard]] void*
       allocate_bytes(size_t __nbytes,
 		     size_t __alignment = alignof(max_align_t))
       { return _M_resource->allocate(__nbytes, __alignment); }
@@ -189,7 +189,7 @@ namespace pmr
       { _M_resource->deallocate(__p, __nbytes, __alignment); }
 
       template<typename _Up>
-	_Up*
+	[[nodiscard]] _Up*
 	allocate_object(size_t __n = 1)
 	{
 	  if ((__detail::__int_limits<size_t>::max() / sizeof(_Up)) < __n)
@@ -204,7 +204,7 @@ namespace pmr
 	{ deallocate_bytes(__p, __n * sizeof(_Up), alignof(_Up)); }
 
       template<typename _Up, typename... _CtorArgs>
-	_Up*
+	[[nodiscard]] _Up*
 	new_object(_CtorArgs&&... __ctor_args)
 	{
 	  _Up* __p = allocate_object<_Up>();
-- 
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