https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77936
Bug ID: 77936 Summary: include/parallel/checkers.h:66: pointless local variable ? Product: gcc Version: 7.0 Status: UNCONFIRMED Severity: minor Priority: P3 Component: libstdc++ Assignee: unassigned at gcc dot gnu.org Reporter: dcb314 at hotmail dot com Target Milestone: --- trunk/libstdc++-v3/include/parallel/checkers.h:66]: (style) Variable '__position' is modified but its new value is never used. $ fgrep __position trunk/libstdc++-v3/include/parallel/checkers.h unsigned long long __position = 1; __position++; $ Suggest either delete it or use it.