https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117762
--- Comment #1 from David Binderman <dcb314 at hotmail dot com> --- Five more little problems in libgrust: trunk/libgrust/libproc_macro_internal/group.cc:28:32: performance: Function parameter 'stream' should be passed by const reference. [passedByValue] trunk/libgrust/libproc_macro_internal/ident.cc:62:32: performance: Function parameter 'str' should be passed by const reference. [passedByValue] trunk/libgrust/libproc_macro_internal/tokentree.cc:28:34: performance: Function parameter 'group' should be passed by const reference. [passedByValue] trunk/libgrust/libproc_macro_internal/tokentree.cc:36:34: performance: Function parameter 'ident' should be passed by const reference. [passedByValue] trunk/libgrust/libproc_macro_internal/tokentree.cc:52:36: performance: Function parameter 'literal' should be passed by const reference. [passedByValue]
