LWG 2145 - mark constructor for std::error_category as inline and constexpr. Leave the (existing, out-of-line, non-constexpr) in the dylib for compatibility with existing programs) git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@188858 91177308-0d34-0410-b5e6-96231b3b80d8 
diff --git a/include/system_error b/include/system_error index ac3fb44..df668cc 100644 --- a/include/system_error +++ b/include/system_error 
@@ -22,6 +22,7 @@  public:  virtual ~error_category() noexcept;   + constexpr error_category();  error_category(const error_category&) = delete;  error_category& operator=(const error_category&) = delete;   @@ -366,7 +367,11 @@  public:  virtual ~error_category() _NOEXCEPT;   +#ifdef _LIBCPP_BUILDING_SYSTEM_ERROR  error_category() _NOEXCEPT; +#else + _LIBCPP_ALWAYS_INLINE _LIBCPP_CONSTEXPR_AFTER_CXX11 error_category() _NOEXCEPT {} +#endif  private:  error_category(const error_category&);// = delete;  error_category& operator=(const error_category&);// = delete;