www.digitalmars.com         C & C++   DMDScript  

digitalmars.D.bugs - [Issue 2621] New: ref binds to rvalues of user-defined types

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=2621

           Summary: ref binds to rvalues of user-defined types
           Product: D
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla digitalmars.com
        ReportedBy: andrei metalanguage.com


struct Struct {}
alias Struct T;
//alias int T;

T fun() { return T(); }
void gun(ref T) {}
void main()
{
    gun(fun);
}

The code compiles and it shouldn't. ref should never bind to rvalues. Currently
indeed it doesn't bind to rvalues of built-in type (e.g. if the alias above is
switched from Struct to int the code won't compile).


--
Jan 27 2009
next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=2621








 struct Struct {}
 alias Struct T;
 //alias int T;
 
 T fun() { return T(); }
 void gun(ref T) {}
 void main()
 {
     gun(fun);
 }
 
 The code compiles and it shouldn't. ref should never bind to rvalues. Currently
 indeed it doesn't bind to rvalues of built-in type (e.g. if the alias above is
 switched from Struct to int the code won't compile).
 


Furthermore, adding this overload should make the code work:

void gun(T) {}

Currently adding the overload results in the error message:

function test.gun called with argument types:
        (Struct)
matches both:
        test.gun(ref Struct _param_0)
and:
        test.gun(Struct _param_0)


--
Jan 27 2009
prev sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=2621


bugzilla digitalmars.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED





Fixed dmd 2.026


--
Mar 11 2009