https://issues.dlang.org/show_bug.cgi?id=20610

          Issue ID: 20610
           Summary: const in a .tupleof loop is ignored
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: critical
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: andrej.mitrovich@gmail.com

-----
void main ()
{
    struct S
    {
        int what;
    }

    S record;

    foreach (const ref field; record.tupleof)
        field = 10;
}
-----

This compiles fine. It also means that if you try to call a function with this field, it will not respect the 'const' and will allow you to modify the field.

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