merges r30542 from trunk into ruby_1_9_2. Fixes #4279.

--
* pack.c (pack_unpack): the resulted string of unpack('M') must have
  ASCII-8BIT encoding (and ENC_CODERANGE_VALID). [ruby-core:34482]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@31852 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/pack.c b/pack.c
index d659266a41..7366b765a7 100644
--- a/pack.c
+++ b/pack.c
@@ -1978,7 +1978,7 @@ pack_unpack(VALUE str, VALUE fmt)
 		    s++;
 		}
 		rb_str_set_len(buf, ptr - RSTRING_PTR(buf));
-		ENCODING_CODERANGE_SET(buf, rb_usascii_encindex(), ENC_CODERANGE_7BIT);
+		ENCODING_CODERANGE_SET(buf, rb_ascii8bit_encindex(), ENC_CODERANGE_VALID);
 		UNPACK_PUSH(buf);
 	    }
 	    break;