c++11 - Forcing the copy constructor -

i have function this:

object class::function() {     object o;     return o; } 

now when call this:

object o = class::function(); 

it wants use move constructor. want use copy constructor. how force not use move constructor? deleted move constructor won't compile.

edit: constructors this:

object(const object & other) { ... } object(object & other) { ... } object(object && other)=delete; 

if have user-declared (manually declared) copy ctor, move ctor not declared implicitly. leave out move ctor, , won't take part in overload resolution (i.e. don't define deleted, leave out entire declaration).

after cwg dr 1402, explanation different: move ctor declared if there's user-declared copy ctor, implicitly defined deleted. , there's special case deletion makes move ctor not take part in overload resolution. note: if explicitly delete move ctor, still means "if function selected overload resolution, program ill-formed". special case applies when move ctor defaulted (explicitly or implicitly), , when leads move ctor being defined deleted (as implicit definition supplied defaulted function).

#include <iostream>  struct loud {     loud() { std::cout << "default ctor\n"; }     loud(loud const&) { std::cout << "copy ctor\n"; }     loud(loud&&) { std::cout << "move ctor\n"; }     ~loud() { std::cout << "dtor\n"; } };  struct foo {     loud l;     foo() = default;     foo(foo const& p) : l(p.l) { /*..*/ }; // or `= default;`     // don't add move ctor, not deleted! };  foo make_foo() {     return {{}}; }  int main() {     auto x = make_foo(); } 

watch out copy elision (e.g. use -fno-elide-constructors). output:

 default ctor copy ctor dtor dtor 

live example