* eval.c (POP_VARS): should not set DVAR_DONT_RECYCLE if _old

  ruby_vars is already force_recycled.

* gc.c (rb_gc): handles mark stack overflow.

* gc.c (PUSH_MARK): use static mark stack, no more recursion.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1807 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 1 deletions

diff --git a/string.c b/string.c
index c57ebb5a5b..3981e54d01 100644
--- a/string.c
+++ b/string.c
@@ -1101,7 +1101,8 @@ rb_str_aref(str, indx)
 	return rb_str_subpat(str, indx, 0);
 
       case T_STRING:
-	if (rb_str_index(str, indx, 0) != -1) return indx;
+	if (rb_str_index(str, indx, 0) != -1)
+	    return rb_str_dup(indx);
 	return Qnil;
 
       default: