https://issues.dlang.org/show_bug.cgi?id=16301

          Issue ID: 16301
           Summary: CTFE execution of opApply keeps wrong "this" context
                    in foreach's body
           Product: D
           Version: D2
          Hardware: All
               URL: http://dlang.org/
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P3
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: eyal@weka.io

struct OpApply {
    int opApply(scope int delegate(int) dlg) {
        return dlg(1);
    }
}
struct Foo {
    int i;
    this(int x) {
        foreach(_; OpApply()) {
            i = 0; // Error: couldn't find field i of type int in OpApply()
        }
    }
}
enum x = Foo(1);

(also happens with this.i = 0).

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