Merge branch 'master' into bs-local-1

CppCoreGuidelines.md

@@ -2,6 +2,7 @@
 
 February 11, 2017
 
+
 Editors:
 
 * [Bjarne Stroustrup](http://www.stroustrup.com)
@@ -6690,11 +6691,49 @@ This a relatively rare use because implementation can often be organized into a
 
 ##### Reason
 
-???
+Without a using declaration, member functions in the derived class hide the entire inherited overload sets.
 
-##### Example
+##### Example, bad
 
-    ???
+    #include <iostream>
+    class B {
+    public:
+        virtual int f(int i) { std::cout << "f(int): "; return i; }
+        virtual double f(double d) { std::cout << "f(double): "; return d; }
+    };
+    class D: public B {
+    public:
+        int f(int i) override { std::cout << "f(int): "; return i+1; }
+    };
+    int main()
+    {
+        D d;
+        std::cout << d.f(2) << '\n';   // prints "f(int): 3"
+        std::cout << d.f(2.3) << '\n'; // prints "f(int): 3"
+    }
+
+##### Example, good
+
+    class D: public B {
+    public:
+        int f(int i) override { std::cout << "f(int): "; return i+1; }
+        using B::f; // exposes f(double)
+    };
+
+##### Note
+
+This issue affects both virtual and non-virtual member functions
+
+For variadic bases, C++17 introduced a variadic form of the using-declaration,
+
+    template <class... Ts>
+    struct Overloader : Ts... {
+        using Ts::operator()...; // exposes operator() from every base
+    };
+
+##### Enforcement
+
+Diagnose name hiding
 
 ### <a name="Rh-final"></a>C.139: Use `final` sparingly
 
@@ -11795,12 +11834,12 @@ Static tools often have many false positives and run-time tools often have a sig
 We hope for better tools.
 Using multiple tools can catch more problems than a single one.
 
-Help the tools:
+There are other ways you can mitigate the chance of data races:
 
-* less global data
-* fewer `static` variables
-* more use of stack memory (and don't pass pointers around too much)
-* more immutable data (literals, `constexpr`, and `const`)
+* Avoid global data
+* Avoid `static` variables
+* More use of value types on the stack (and don't pass pointers around too much)
+* More use of immutable data (literals, `constexpr`, and `const`)
 
 ### <a name="Rconc-data"></a>CP.3: Minimize explicit sharing of writable data
 
@@ -12432,7 +12471,8 @@ Thread creation is expensive.
         // process
     }
 
-    void master(istream& is)
+    void 
+    (istream& is)
     {
         for (Message m; is >> m; )
             run_list.push_back(new thread(worker, m));

scripts/hunspell/isocpp.dic

@@ -1,7 +1,9 @@
 '
 0xFF0000
 0b0101'0101
+10x
 '14
+20x
 2D
 2K
 2ndEdition
@@ -69,6 +71,7 @@ CComPtr
 cerr
 chrono
 cin
+Clang's
 class'
 clib
 Cline99
@@ -492,6 +495,7 @@ toolchains
 TotallyOrdered
 TP
 tradeoff
+TSAN
 TSs
 tt
 typeid