c.float64 = c.Ident("float64")
	c.complex64 = c.Ident("complex64")
	c.complex128 = c.Ident("complex128")
	c.void = c.Ident("void")
	c.string = c.Ident("string")
	c.goVoid = c.Ident("_Ctype_void")

	// Normally cgo translates void* to unsafe.Pointer,
	// but for historical reasons -godefs uses *byte instead.
	if *godefs {
		c.goVoidPtr = &ast.StarExpr{X: c.byte}
	} else {
		c.goVoidPtr = c.Ident("unsafe.Pointer")
	}