1 set args -geom =800x600+0+0 -sync
2 set env MallocScribble 1
3 set env MallocPreScribble 1
4 set env MallocErrorAbort 1
5 set env MallocCheckHeapAbort 1
6 set env MallocGuardEdges 1
7 #set env MallocCheckHeapStart 130000
8 #set env MallocCheckHeapEach 1