xalloca           268 tree-diff.c    		parents_sha1 = xalloca(nparent * sizeof(parents_sha1[0]));
xalloca           405 tree-diff.c    	tp     = xalloca(nparent * sizeof(tp[0]));
xalloca           406 tree-diff.c    	tptree = xalloca(nparent * sizeof(tptree[0]));