{ADMB, C_VCON, C_NONE, C_NONE, C_NONE, C_NONE, 51, 4, 0, 0, 0},
	{AHINT, C_VCON, C_NONE, C_NONE, C_NONE, C_NONE, 52, 4, 0, 0, 0},
	{ASYS, C_VCON, C_NONE, C_NONE, C_NONE, C_NONE, 50, 4, 0, 0, 0},
	{ASYS, C_VCON, C_NONE, C_NONE, C_ZREG, C_NONE, 50, 4, 0, 0, 0},
	{ASYSL, C_VCON, C_NONE, C_NONE, C_ZREG, C_NONE, 50, 4, 0, 0, 0},
	{ATLBI, C_SPOP, C_NONE, C_NONE, C_NONE, C_NONE, 107, 4, 0, 0, 0},

     * application/vnd.ms-powerpoint=powerpoint<br>
     * application/vnd.openxmlformats-officedocument.presentationml.presentation=powerpoint<br>
     * application/vnd.oasis.opendocument.text=odt<br>
     * application/vnd.oasis.opendocument.spreadsheet=ods<br>
     * application/vnd.oasis.opendocument.presentation=odp<br>
     * application/pdf=pdf<br>
     * application/x-fictionbook+xml=fb2<br>
     * application/e-pub+zip=epub<br>

	case ir.OCFUNC:
		return n

	case ir.OCALLINTER, ir.OCALLFUNC:
		n := n.(*ir.CallExpr)
		return walkCall(n, init)

	case ir.OAS, ir.OASOP:
		return walkAssign(init, n)

	case ir.OAS2:
		n := n.(*ir.AssignListStmt)
		return walkAssignList(init, n)

	// a,b,... = fn()
	case ir.OAS2FUNC:
		n := n.(*ir.AssignListStmt)
		return walkAssignFunc(init, n)

	// x, y = <-c

		call := mkcall1(fn.Nname, fn.Type().ResultsTuple(), init, ir.NewInt(base.Pos, sliceType.Elem().Size()), typecheck.Conv(typecheck.Conv(len, lenType), types.Types[types.TUINTPTR]))
		appendWalkStmt(init, ir.NewAssignListStmt(base.Pos, ir.OAS2, []ir.Node{mem, overflow}, []ir.Node{call}))

		// if overflow || mem > -uintptr(ptr) {
		//     if ptr == nil {
		//         panicunsafesliceptrnil()
		//     }
		//     panicunsafeslicelen()
		// }

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