clang/test/SemaCXX/warn-self-move.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -Wself-move -std=c++11 -verify %s
   2
   3 // definitions for std::move
   4 namespace std {
   5 inline namespace foo {
   6 template <class T> struct remove_reference { typedef T type; };
   7 template <class T> struct remove_reference<T&> { typedef T type; };
   8 template <class T> struct remove_reference<T&&> { typedef T type; };
   9
  10 template <class T> typename remove_reference<T>::type &&move(T &&t);
  11 }
  12 }
  13
  14 void int_test() {
  15   int x = 5;
  16   x = std::move(x);  // expected-warning{{explicitly moving}}
  17   (x) = std::move(x);  // expected-warning{{explicitly moving}}
  18
  19   using std::move;
  20   x = move(x);  // expected-warning{{explicitly moving}}
  21 }
  22
  23 int global;
  24 void global_int_test() {
  25   global = std::move(global);  // expected-warning{{explicitly moving}}
  26   (global) = std::move(global);  // expected-warning{{explicitly moving}}
  27
  28   using std::move;
  29   global = move(global);  // expected-warning{{explicitly moving}}
  30 }
  31
  32 class field_test {
  33   int x;
  34   field_test(field_test&& other) {
  35     x = std::move(x);  // expected-warning{{explicitly moving}}
  36     x = std::move(other.x);
  37     other.x = std::move(x);
  38     other.x = std::move(other.x);  // expected-warning{{explicitly moving}}
  39   }
  40 };
  41
  42 struct A {};
  43 struct B { A a; };
  44 struct C { C() {}; ~C() {} };
  45 void struct_test() {
  46   A a;
  47   a = std::move(a);  // expected-warning{{explicitly moving}}
  48
  49   B b;
  50   b = std::move(b);  // expected-warning{{explicitly moving}}
  51   b.a = std::move(b.a);  // expected-warning{{explicitly moving}}
  52
  53   C c;
  54   c = std::move(c);  // expected-warning{{explicitly moving}}
  55 }