Question about some code in make-indirect-buffer

[John Wiegley]

In buffer.c, in Fmake_indirect_buffer, it says:

  base_buffer = Fget_buffer (base_buffer);
  if (NILP (base_buffer))
    error ("No such buffer: `%s'",
           XSTRING (XBUFFER (base_buffer)->name)->data);

If `base_buffer' has just been found to be NIL, isn't the code in the
error call always going to be fatal?

I ask only because that exact call to error is trigger a core dump for
me consistently, and I'm trying to track it down.