www.digitalmars.com         C & C++   DMDScript  

digitalmars.D.bugs - [Issue 7850] New: Cannot call overloaded function from inherited class

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=7850

           Summary: Cannot call overloaded function from inherited class
           Product: D
           Version: unspecified
          Platform: x86_64
        OS/Version: Windows
            Status: NEW
          Severity: minor
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: gaboonviper gmx.net


--- Comment #0 from Boyd <gaboonviper gmx.net> 2012-04-07 11:40:07 PDT ---
When a class overloads a function from its super class, the overloaded function
cannot be found by DMD.

Example:
-------------------
import std.stdio;

public class A
{
    public int X = 12;
    public void DoSomething(int x)
    {
        writeln(x);
    }
}

public class B: A
{
    public void DoSomething()
    {
        DoSomething(X);
    }    
}

void main()
{
    auto b = new B();
    b.DoSomething();
}
-------------------

This code causes the compiler error: function OverloadBug.B.DoSomething() is
not callable using types (int).

You can work around the problem by using super.DoSomething(X) instead.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Apr 07 2012
parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=7850


Walter Bright <bugzilla digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |bugzilla digitalmars.com
         Resolution|                            |INVALID


--- Comment #1 from Walter Bright <bugzilla digitalmars.com> 2012-04-07
12:26:52 PDT ---
The name visibility rules follow that of C++ - names in the super class are not
visible if any by that name in the derived class exist. To overload them
together, add the line:

    alias A.DoSomething DoSomething;

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Apr 07 2012