[Issue 6312] New: template instance cannot use argument from enclosing template

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=6312

           Summary: template instance cannot use argument from enclosing
                    template
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: mrmocool at gmx.de


--- Comment #0 from Trass3r <mrmocool at gmx.de> 2011-07-14 04:16:39 PDT ---
extern(C) void printf(const char*, ...);
void h() { printf("h()"); }

class Bla
{
    mixin wrap!h;
}

mixin template wrap(alias f)
{
    void blub(alias g = f)()
    {
        g();
    }
}

void main()
{
    Bla b = new Bla();
    b.blub();
}

$ dmd -c nonlocaltemplate.d 
nonlocaltemplate.d(20): Error: template instance cannot use local 'f' as
parameter to non-global template blub(alias g = f)
nonlocaltemplate.d(20): Error: template instance forward reference of f
nonlocaltemplate.d(20): Error: template instance
nonlocaltemplate.Bla.wrap!(h).blub!(f) error instantiating


Note that imho this is different from
http://d.puremagic.com/issues/show_bug.cgi?id=3051 because here the argument is
not on the stack but it's a template argument (and thus a compile-time value)

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