sm_heap_group
d = sm_malloc_tagged(l, "sm_strdup", 0, sm_heap_group());
d = sm_malloc_tagged_x(l, "sm_strdup_x", 0, sm_heap_group());
oldgroup = sm_heap_group();
sm_dprintf("runqueue() heap group #%d\n", sm_heap_group());
oldgroup = sm_heap_group();
sm_heap_group());
macdefine_tagged(mac,c,id,v,__FILE__,__LINE__,sm_heap_group())
sm_heap_group());
sm_dprintf("smtp() heap group #%d\n", sm_heap_group());
p = sm_malloc_tagged((unsigned) sz, file, line, sm_heap_group());