[Issue 3797] Regression(2.038): Implicit conversion between incompatible function pointers

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=3797


timon.gehr at gmx.ch changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|2.040                       |D2


--- Comment #11 from timon.gehr at gmx.ch 2011-05-14 08:12:54 PDT ---
(In reply to comment #8)
> *** Issue 5827 has been marked as a duplicate of this issue. ***

Well, not exactly. But I guess it can be fixed together. My bug report was
about function pointers with _different return types_ converting to each other:

Timon Gehr wrote:
> The following invalid D code is accepted by DMD:
> 
> import std.stdio;
> 
> int a=0;
> ref int g(){
>     writeln("called g");
>     return ++a;
> }
> 
> void main(){
>     int function() f=&g; //this should issue an error!
>     writeln(cast(int)&a);
>     writeln(f());
> }
> 
> Output:
> -144939256
> called g
> -144939256
> 
> (&g is implicitly cast to "int function() ref", after that, the identical
> calling conventions for "ref int" (int*) and int result in an implicit
> reinterpret-cast from "ref int" to int.)

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