[Issue 1760] New: Closures - Variable unnecessarily allocated on heap

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=1760

           Summary: Closures - Variable unnecessarily allocated on heap
           Product: D
           Version: 2.009
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Severity: trivial
          Priority: P3
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: xnknet at gmail.com


Using this sample code:

int delegate() three(){
        int a = 35;
        int b = 60;
        int c = 75;

        int geta(){ return a; }
        int getb(){ return b; }

        writeln(&a);
        writeln(&b);
        writeln(&c);

        return &geta;
}

void main(){
        three();
}


Prints:
892FF4
892FF8
12FF28

This means that 'int b' is allocated on the heap, even though the function 'int
getb()' is never referenced.


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