www.digitalmars.com         C & C++   DMDScript  

digitalmars.D.bugs - [Issue 1354] New: Can use function prototype in typedef and alias.

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=1354

           Summary: Can use function prototype in typedef and alias.
           Product: D
           Version: 1.017
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla digitalmars.com
        ReportedBy: aziz.kerim gmail.com


typedef int[] func(A,B,C)(int bla); // works with alias instead of typedef,
too.
func foo; // Error: variable foo cannot be declared to be a function
func* foo; // works


--
Jul 20 2007
next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=1354


shro8822 vandals.uidaho.edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |shro8822 vandals.uidaho.edu





Why should having a typedef to a function type be an issue?

It might be but I'm not seeing it.


--
Jul 20 2007
prev sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=1354








 Why should having a typedef to a function type be an issue?
 
 It might be but I'm not seeing it.
 


The problem is that the compiler ignores the template parameter list. The
compiler should either flag this as an error or allow for such declarations.

A declaration like:

typedef A[] func(A, B)(B bla);

should be seen by the compiler as:

template func(A, B)
{
  typedef A[] func(B bla);
}

Instantiate template:

func!(int, int)* foo;


--
Jul 31 2007