* io.c (rb_io_s_read): allow specifying encoding explicitly.

* io.c (rb_io_binmode): specifies encoding to ASCII-8BIT (binary).

* io.c (rb_io_s_read): IO should be in binary mode when offset is
  specified.

* encoding.c (rb_to_encoding): returns default encoding if no
  corresponding encoding found.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@14411 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/numeric.c b/numeric.c
index 7c7876748..45a9ce025 100644
--- a/numeric.c
+++ b/numeric.c
@@ -1860,6 +1860,7 @@ int_chr(int argc, VALUE *argv, VALUE num)
 	break;
     }
     enc = rb_to_encoding(argv[0]);
+    if (!enc) enc = rb_default_encoding();
     if (i < 0 || (n = rb_enc_codelen(i, enc)) <= 0) goto out_of_range;
     str = rb_enc_str_new(0, n, enc);
     rb_enc_mbcput(i, RSTRING_PTR(str), enc);