[libcxx-commits] [libcxx] 1fb91be - [libc++][NFC] Adjust synopsis for std::launder

[Louis Dionne via libcxx-commits]

Author: Louis Dionne
Date: 2023-11-23T11:11:51-05:00
New Revision: 1fb91beb173b1c3ca93c6ac6e01aab210369e083

URL: https://github.com/llvm/llvm-project/commit/1fb91beb173b1c3ca93c6ac6e01aab210369e083
DIFF: https://github.com/llvm/llvm-project/commit/1fb91beb173b1c3ca93c6ac6e01aab210369e083.diff

LOG: [libc++][NFC] Adjust synopsis for std::launder

Added: 
    

Modified: 
    libcxx/include/new

Removed: 
    


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diff  --git a/libcxx/include/new b/libcxx/include/new
index cb280743b6e1860..c60c6a5685a172f 100644
--- a/libcxx/include/new
+++ b/libcxx/include/new
@@ -46,7 +46,7 @@ new_handler set_new_handler(new_handler new_p) noexcept;
 new_handler get_new_handler() noexcept;
 
 // 21.6.4, pointer optimization barrier
-template <class T> constexpr T* launder(T* p) noexcept; // C++17
+template <class T> [[nodiscard]] constexpr T* launder(T* p) noexcept;   // C++17, nodiscard since C++20
 }  // std
 
 void* operator new(std::size_t size);                                   // replaceable, nodiscard in C++20