Avoid redundant redeclaration of 'constexpr' static data member

Summary: Handling the `out-of-line definition of constexpr static data member is redundant in C++17 and is deprecated [-Werror,-Wdeprecated]` warning on Xcode 15. Reviewed By: Daij-Djan Differential Revision: D46874052 fbshipit-source-id: 6dc7fc08a69c3e7d789a0dc32e2d4d2156d4f6dc
facebook · Jun 27, 2023 · 5095e77 · 5095e77
1 parent b4fabe8
commit 5095e77
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/folly/FixedString.h b/folly/FixedString.h
@@ -58,8 +58,10 @@ struct FixedStringBase_ {
   static constexpr std::size_t npos = static_cast<std::size_t>(-1);
 };
 
+#if FOLLY_CPLUSPLUS < 201703L
 template <class Void>
 constexpr std::size_t FixedStringBase_<Void>::npos;
+#endif
 
 using FixedStringBase = FixedStringBase_<>;