bug#18354: 24.4.50; vector sorting on darwin broken

[Jordon Biondo]

Sorting vectors on a DARWIN system now segfaults due to a difference in
the order in which arguments are passed. I believe this is also the case
on bsd and others.

(sort [1 4 2] '<) ;; => seg fault

I have included my fix for my DARWIN system. I cannot test
on bsd and other. So I think it needs to be hashed out more for full
portability, but this works for my single use case.

Thank You.


*** fns.c       2014-08-29 11:02:30.000000000 -0400
--- newfns.c    2014-08-29 11:02:25.000000000 -0400
*************** static Lisp_Object sort_vector_predicate
*** 1885,1891 ****
  
  static int
  #ifdef HAVE_QSORT_R
! sort_vector_compare (const void *p, const void *q, void *arg)
  #else
  sort_vector_compare (const void *p, const void *q)
  #endif /* HAVE_QSORT_R */  
--- 1885,1895 ----
  
  static int
  #ifdef HAVE_QSORT_R
! #ifdef DARWIN_OS
! sort_vector_compare (void *arg, const void *p, const void *q)
! #else
! sort_vector_compare (const void *p, const void *q, const void *arg)
! #endif
  #else
  sort_vector_compare (const void *p, const void *q)
  #endif /* HAVE_QSORT_R */  
*************** sort_vector (Lisp_Object vector, Lisp_Ob
*** 1928,1934 ****
--- 1932,1942 ----
  
    /* Setup predicate and sort.  */
  #ifdef HAVE_QSORT_R
+ #ifdef DARWIN_OS
+   qsort_r (v, len, word_size, (void *) &predicate, sort_vector_compare);
+ #else
    qsort_r (v, len, word_size, sort_vector_compare, (void *) &predicate);
+ #endif
  #else  
    sort_vector_predicate = predicate;
    qsort (v, len, word_size, sort_vector_compare);




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