[Bug c++/17184] New: Unexpected copy constructor call

[Bug c++/17184] New: Unexpected copy constructor call

[bill at classdesign dot com]

Following code should compile:

class X
{
   public:
          X()
          {
          }
   private:
          X( const X& );
          X& operator=( const X& );
};

void f( const X& )
{
}

int
main()
{
   f( X() );
   return 0;
}

-- 
           Summary: Unexpected copy constructor call
           Product: gcc
           Version: 3.4.1
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bill at classdesign dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17184

[Bug c++/17184] Unexpected copy constructor call

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-08-25 14:47 -------
*** Bug 17185 has been marked as a duplicate of this bug. ***

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17184

[Bug c++/17184] Unexpected copy constructor call

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-08-25 14:50 -------
Read <http://gcc.gnu.org/gcc-3.4/changes.html>:
When binding an rvalue of class type to a reference, the copy constructor of the class must be 
accessible. For instance, consider the following code:
        class A 
        {
        public:
          A();
          
        private:
          A(const A&);   // private copy ctor
        };
        
        A makeA(void);
        void foo(const A&);
        
        void bar(void)
        {
          foo(A());       // error, copy ctor is not accessible
          foo(makeA());   // error, copy ctor is not accessible
          
          A a1;
          foo(a1);        // OK, a1 is a lvalue
        }

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17184