From: KUBO Takehiro <kubo@...>
Date: 2008-01-02T23:36:00+09:00
Subject: Re: Using "sort!" in a C extension (1.9 problem)

Hi,

On Jan 2, 2008 10:13 PM, Andre Nathan <andre@digirati.com.br> wrote:

> Is this patch going to be applied? Should I send a report to ruby-core?

No. I found a correct way.

1. add the following line to 'extconf.rb' before create_makefile.
  have_type('rb_block_call_func', 'ruby.h')

2. fix sort_by_length as follows.

static VALUE
sort_by_length(VALUE i, VALUE dummy
#ifdef HAVE_TYPE_RB_BLOCK_CALL_FUNC
   , int argc, VALUE *argv
#endif
)
{
#ifdef HAVE_TYPE_RB_BLOCK_CALL_FUNC
  /* ruby 1.9 uses argc and argv. */
  VALUE a0 = argv[0];
  VALUE a1 = argv[1];
#else
  /* ruby 1.8 uses i. */
  VALUE a0 = RARRAY_PTR(i)[0];
  VALUE a1 = RARRAY_PTR(i)[1];
#endif
  Check_Type(a0, T_ARRAY);
  Check_Type(a1, T_ARRAY);
  return LONG2FIX(RARRAY_LEN(a0) - RARRAY_LEN(a1));
}