* io.c (rb_io_external_encoding): should fill delayed

  initialization for STDIN.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14398 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/io.c b/io.c
index 6947987ee8..b03dac5e94 100644
--- a/io.c
+++ b/io.c
@@ -5671,6 +5671,9 @@ rb_io_external_encoding(VALUE io)
     rb_io_t *fptr;
 
     GetOpenFile(io, fptr);
+    if (!fptr->enc && fptr->fd == 0) {
+	fptr->enc = rb_default_external_encoding();
+    }
     return rb_enc_from_encoding(fptr->enc);
 }