[futures.future_error] - C++14 → C++17

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tmp/tmp9ilatnq0/{from.md → to.md} RENAMED Viewed

@@ -2,24 +2,32 @@
 ``` cpp
 namespace std {
   class future_error : public logic_error {
   public:
-    future_error(error_code ec);  // exposition only
     const error_code& code() const noexcept;
     const char*       what() const noexcept;
   };
 }
 ```
 ``` cpp
 const error_code& code() const noexcept;
 ```
-*Returns:* The value of `ec` that was passed to the object’s
-constructor.
 ``` cpp
 const char* what() const noexcept;
 ```

 ``` cpp
 namespace std {
   class future_error : public logic_error {
   public:
+ explicit future_error(future_errc e);
     const error_code& code() const noexcept;
     const char*       what() const noexcept;
+  private:
+    error_code ec_;  // exposition only
   };
 }
 ```
+``` cpp
+explicit future_error(future_errc e);
+```
+*Effects:* Constructs an object of class `future_error` and initializes
+`ec_` with `make_error_code(e)`.
 ``` cpp
 const error_code& code() const noexcept;
 ```
+*Returns:* `ec_`.
 ``` cpp
 const char* what() const noexcept;
 ```

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