🚀 go-pugleaf

Dear GCC,

I am porting gcc 2.1.
When I compiled a program with -O2 flag,  it reached the following
block in sched.c:create_reg_dead_note :

  if (link == 0)
    /* In theory, we should not end up with more REG_DEAD reg notes than we
       started with.  In practice, this can occur as the result of bugs in
       flow, combine and/or sched.  */
    {
#if 1
      abort ();
#else
      link = rtx_alloc (EXPR_LIST);
      PUT_REG_NOTE_KIND (link, REG_DEAD);
#endif
    }

Can you tell me how can I go around this ?  is it safe to comment out
the abort()  ?

Thanks for your help.


Dong