src/medit/items.c:198: error: DEAD_STORE The value written to &zd (type float) is never used. Showing all 1 steps of the trace src/medit/items.c:198:3: Write of unused value 196. xd = cube->cma[0] - cube->cmi[0]; 197. yd = cube->cma[1] - cube->cmi[1]; 198. zd = cube->cma[2] - cube->cmi[2]; ^ 199. 200. glBegin(GL_QUADS);