From: "K.Sasada" <ko1@...>
Date: 2003-07-31T12:52:54+09:00
Subject: Re: Segfault with map operation on 1.8p5


  [ Segfault with map operation on 1.8p5 ]
  Thu, 31 Jul 2003 11:41:33 +0900

> The following snippet is a silly thing to do, but I
> thought it might be worth mentioning.  It segfaults on
> 1.8p5, but not 1.6.x:
> 
> a = [1,2,3,4]
> h = {}
> a.map{ |e| h[e] = a.shift }


This problem is solved by following patch for ruby 1.8.0 p5.


regards,
-- 
// SASADA Koichi @ namikilab.tuat.ac.jp
//
// Thanks to unak :)


--- array.c.org Thu Jul 31 03:20:06 2003
+++ array.c     Thu Jul 31 03:29:54 2003
@@ -1197,9 +1197,8 @@ rb_ary_collect(ary)
        return rb_ary_new4(RARRAY(ary)->len, RARRAY(ary)->ptr);
     }

-    len = RARRAY(ary)->len;
     collect = rb_ary_new2(len);
-    for (i=0; i<len; i++) {
+    for (i=0; i<RARRAY(ary)->len; i++) {
        rb_ary_push(collect, rb_yield(RARRAY(ary)->ptr[i]));
     }
     return collect;