../src/main/linklist_kdtree.F90 do i = 2,2**(refinelevels+1)-1 ^ Warning: iteration 2147483645 invokes undefined behavior [-Waggressive-loop-optimizations] ../src/main/linklist_kdtree.F90 containing loop ../src/setup/setup_nsdisc.f90 use units, only:udist, umass, utime, set_units 1 Warning: Unused module variable ‘utime’ which has been explicitly imported at (1) [-Wunused-variable]