https://issues.dlang.org/show_bug.cgi?id=13599

          Issue ID: 13599
           Summary: [D1] backend/cod1.c ICE with -inline
           Product: D
           Version: D1
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P1
         Component: DMD
          Assignee: nobody@puremagic.com
          Reporter: public@dicebot.lv

Reduced test case:

const C   = 1;

struct E ( ubyte G )
{
}

alias E!(C) I;

struct J
{
}

class L
{
    struct M ( N... )
    {
        union { N P; }

        Q R ( Q ) ()
        {
            foreach ( U ; P )
                return U;
            assert(0);
        }
    }

    class X
    {
        bool delegate ( ) AB;
    }

    class BB ( M, I, CB, DB ) : X
    {
        void FB ( )
        {
            this.AB = &this.outer.IB!(I, CB);
        }
    }

    bool IB ( I, CB ) ( )
    {
        auto KB = &(cast(CB)this).MB!(I);
        return false;
    }

    alias M!(I) OB;

    BB!(OB, I, typeof(this), J) QB;

    void MB (RB) ( )
    {
        auto SB = cast(OB*) null;
        SB.R!(RB);
    }
}

$ dmd1 -inline ./result.d Internal error: backend/cod1.c 1708

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