http://d.puremagic.com/issues/show_bug.cgi?id=4304

           Summary: default arguments using delegates of a global object
                    no longer work
           Product: D
           Version: D1
          Platform: Other
        OS/Version: Mac OS X
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: fawzi@gmx.ch


--- Comment #0 from Fawzi Mohamed <fawzi@gmx.ch> 2010-06-13 09:48:53 PDT ---
with dmd 1.062
{{{
class A{
    int f(int a){
        return a;
    }
    static A defaultA;
    static this(){
        defaultA=new A();
    }
}

void f(int delegate(int) arg=&A.defaultA.f){
    arg(2);
}

void defaultCall(){
    f();
}
}}}

fails with Error: cannot inline default argument &defaultA.f

whereas it did work previously.

This might be indeed correct if the compiler cannot guarantee that the correct value of defaultA is used (i.e. after the static initializer).

It seemed to work correctly in my use case, and the fact that setting defaultA
to another value is most probably not "seen" by default value shows that using
null as default value, and an
    if (arg is null) arg=&A.defaultA.f;
in the body is probably a better solution.

I still submit it here, but most likely this change is a feature, not a bug.

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http://d.puremagic.com/issues/show_bug.cgi?id=4304


Don <clugdbug@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |clugdbug@yahoo.com.au
         Resolution|                            |DUPLICATE


--- Comment #1 from Don <clugdbug@yahoo.com.au> 2010-09-13 23:57:26 PDT ---
Same root cause as bug 4820.

*** This issue has been marked as a duplicate of issue 4820 ***

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