void moveToConstReferencePositives() {
NoMoveSemantics obj;
// Basic case.
callByConstRef(std::move(obj));
// CHECK-MESSAGES: :[[@LINE-1]]:18: warning: passing result of std::move() as
// CHECK-FIXES: callByConstRef(obj);
// Also works for second argument.
callByConstRef(1, std::move(obj));
// CHECK-MESSAGES: :[[@LINE-1]]:21: warning: passing result of std::move() as
// CHECK-FIXES: callByConstRef(1, obj);
// Works if std::move() applied to a temporary.
callByConstRef(std::move(NoMoveSemantics()));
// CHECK-MESSAGES: :[[@LINE-1]]:18: warning: passing result of std::move() as
// CHECK-FIXES: callByConstRef(NoMoveSemantics());
// Works if calling a copy constructor.
NoMoveSemantics other(std::move(obj));
// CHECK-MESSAGES: :[[@LINE-1]]:25: warning: passing result of std::move() as
// CHECK-FIXES: NoMoveSemantics other(obj);
// Works if calling assignment operator.
other = std::move(obj);
// CHECK-MESSAGES: :[[@LINE-1]]:11: warning: passing result of std::move() as
// CHECK-FIXES: other = obj;
}
void moveToConstReferenceNegatives() {
// No warning when actual move takes place.
MoveSemantics move_semantics;
callByValue(std::move(move_semantics));
callByRValueRef(std::move(move_semantics));
MoveSemantics other(std::move(move_semantics));
other = std::move(move_semantics);
// No warning if std::move() not used.
NoMoveSemantics no_move_semantics;
callByConstRef(no_move_semantics);
// No warning if instantiating a template.
templateFunction(no_move_semantics);
// No warning inside of macro expansions.
M3(NoMoveSemantics, no_move_semantics);
// No warning inside of macro expansion, even if the macro expansion is inside
// a lambda that is, in turn, an argument to a macro.
CALL([no_move_semantics] { M3(NoMoveSemantics, no_move_semantics); });
auto lambda = [] {};
auto lambda2 = std::move(lambda);
}
