* pack.c (pack_pack): fixed length for odd length string.

  [ruby-dev:37283]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20580 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Mon Dec  8 18:31:41 2008  Nobuyoshi Nakada  <[email protected]>
+
+	* pack.c (pack_pack): fixed length for odd length string.
+	  [ruby-dev:37283]
+
 Mon Dec  8 11:28:14 2008  Nobuyoshi Nakada  <[email protected]>
 
 	* ruby.c (proc_options): added version, copyright, usage, yydebug,

pack.c

@@ -620,7 +620,7 @@ pack_pack(VALUE ary, VALUE fmt)
 		    long i, j = 0;
 
 		    if (len > plen) {
-			j = (len - plen + 1)/2;
+			j = (len + 1) / 2 - (plen + 1) / 2;
 			len = plen;
 		    }
 		    for (i=0; i++ < len; ptr++) {
@@ -651,7 +651,7 @@ pack_pack(VALUE ary, VALUE fmt)
 		    long i, j = 0;
 
 		    if (len > plen) {
-			j = (len - plen + 1)/2;
+			j = (len + 1) / 2 - (plen + 1) / 2;
 			len = plen;
 		    }
 		    for (i=0; i++ < len; ptr++) {

test/ruby/test_pack.rb

@@ -179,11 +179,23 @@ def test_pack_unpack_hH
     assert_equal("", ["10ef"].pack("h0"))
     assert_equal("\x01\x0e", ["10ef"].pack("h3"))
     assert_equal("\x01\xfe\x0", ["10ef"].pack("h5"))
+    assert_equal("\xff\x0f", ["fff"].pack("h3"))
+    assert_equal("\xff\x0f", ["fff"].pack("h4"))
+    assert_equal("\xff\x0f\0", ["fff"].pack("h5"))
+    assert_equal("\xff\x0f\0", ["fff"].pack("h6"))
+    assert_equal("\xff\x0f\0\0", ["fff"].pack("h7"))
+    assert_equal("\xff\x0f\0\0", ["fff"].pack("h8"))
 
     assert_equal("\x10\xef", ["10ef"].pack("H*"))
     assert_equal("", ["10ef"].pack("H0"))
     assert_equal("\x10\xe0", ["10ef"].pack("H3"))
     assert_equal("\x10\xef\x0", ["10ef"].pack("H5"))
+    assert_equal("\xff\xf0", ["fff"].pack("H3"))
+    assert_equal("\xff\xf0", ["fff"].pack("H4"))
+    assert_equal("\xff\xf0\0", ["fff"].pack("H5"))
+    assert_equal("\xff\xf0\0", ["fff"].pack("H6"))
+    assert_equal("\xff\xf0\0\0", ["fff"].pack("H7"))
+    assert_equal("\xff\xf0\0\0", ["fff"].pack("H8"))
 
     assert_equal(["10ef"], "\x01\xfe".unpack("h*"))
     assert_equal([""], "\x01\xfe".unpack("h0"))