\pagebreak \chapter{The \code{default(none)} Clause} \label{chap:default_none} The following example distinguishes the variables that are affected by the \code{default(none)} clause from those that are not. Beginning with OpenMP 4.0, variables with \code{const}-qualified type and no mutable member are no longer predetermined shared. Thus, these variables (variable \plc{c} in the example) need to be explicitly listed in data-sharing attribute clauses when the \code{default(none)} clause is specified. \cexample{default_none}{1c} \fexample{default_none}{1f}