if_stack           91 lib/ubasic/ubasic.c static short if_stack[MAX_IF_STACK_DEPTH];
if_stack         1026 lib/ubasic/ubasic.c       if_stack[if_stack_ptr] = r;
if_stack         1123 lib/ubasic/ubasic.c     r = if_stack[if_stack_ptr-1];