merges r22255 from trunk into ruby_1_9_1.

* compile.c (compile_array_, defined_expr, iseq_compile_each): hide
  and freeze internal literal objects, to prevent from modifying.
  [ruby-dev:37959]

* iseq.c (insn_operand_intern): copy internal literal objects.

* insns.def (putstring, duparray): ditto.

* string.c (rb_str_replace): exported.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@22532 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 2 deletions

diff --git a/insns.def b/insns.def
index 2ffd0ea783..72ed335e91 100644
--- a/insns.def
+++ b/insns.def
@@ -373,7 +373,7 @@ putstring
 ()
 (VALUE val)
 {
-    val = rb_str_new3(str);
+    val = rb_str_replace(rb_str_new(0, 0), str);
 }
 
 /**
@@ -460,7 +460,7 @@ duparray
 ()
 (VALUE val)
 {
-    val = rb_ary_dup(ary);
+    val = rb_ary_replace(rb_ary_new2(0), ary);
 }
 
 /**