c++ - Copy/move constructor elision

Question

Not sure whether Section 12.8 #31.3

[...] copy elision, is permitted in the following circumstances (which may be combined to eliminate multiple copies):

when a temporary class object that has not been bound to a reference ([class.temporary]) would be copied/moved to a class object with the same cv-unqualified type, the copy/move operation can be omitted by constructing the temporary object directly into the target of the omitted copy/move [...]

applies to following:

class A {
   public:
     A() {}
     A(const A&) = delete;
     A(A&&) { printf("move"); }
};

void foo(A a) {}

int main() {
  A a;
  foo(std::move(a));
}

Is elision allowed in this case? I want to ensure a is moved from.

question from:https://stackoverflow.com/questions/65910443/copy-move-constructor-elision

Answer 1

Waitting for answers