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cppdraft/depr/static/constexpr.md

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+[depr.static.constexpr]
+
+# Annex D (normative) Compatibility features [[depr]](./#depr)
+
+## D.7 Redeclaration of static constexpr data members [depr.static.constexpr]
+
+[1](#1)
+
+[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/future.tex#L148)
+
+For compatibility with prior revisions of C++, a constexpr static data member may be redundantly redeclared outside the class with no
+initializer ([[basic.def]](basic.def "6.2 Declarations and definitions"), [[class.static.data]](class.static.data "11.4.9.3 Static data members"))[.](#1.sentence-1)
+
+This usage is deprecated[.](#1.sentence-2)
+
+[*Example [1](#example-1)*: struct A {static constexpr int n = 5; // definition (declaration in C++ 2014)};
+
+constexpr int A::n; // redundant declaration (definition in C++ 2014) — *end example*]