[libcxx-commits] [PATCH] D130853: [libc++] Remove `operator!=` from `type_info` in C++20

[Adrian Vogelsgesang via Phabricator via libcxx-commits]

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Implements part of:

- P1614R2 The Mothership has Landed


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D130853

Files:
  libcxx/include/typeinfo


Index: libcxx/include/typeinfo
===================================================================
--- libcxx/include/typeinfo
+++ libcxx/include/typeinfo
@@ -22,7 +22,7 @@
     virtual ~type_info();
 
     bool operator==(const type_info& rhs) const noexcept;
-    bool operator!=(const type_info& rhs) const noexcept;
+    bool operator!=(const type_info& rhs) const noexcept; // removed in C++20
 
     bool before(const type_info& rhs) const noexcept;
     size_t hash_code() const noexcept;
@@ -112,9 +112,11 @@
       return __compare(__arg) == 0;
     }
 
+#if _LIBCPP_STD_VER <= 17
     _LIBCPP_INLINE_VISIBILITY
     bool operator!=(const type_info& __arg) const _NOEXCEPT
     { return !operator==(__arg); }
+#endif
 };
 
 #else // !defined(_LIBCPP_ABI_MICROSOFT)


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