From 84bf320bea3bce391ecc19e6004c232ff76d5c43 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 17 Aug 2015 02:57:39 +0000
Subject: io.c: raise at incomplete char

* io.c (rb_io_each_codepoint): raise an exception at incomplete
  character before EOF when conversion takes place.  [Bug #11444]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51594 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 io.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

(limited to 'io.c')

diff --git a/io.c b/io.c
index fc973bc5c8..93a808b140 100644
--- a/io.c
+++ b/io.c
@@ -3727,13 +3727,16 @@ rb_io_each_codepoint(VALUE io)
 		}
 		if (more_char(fptr) == MORE_CHAR_FINISHED) {
                     clear_readconv(fptr);
-		    /* ignore an incomplete character before EOF */
+		    if (!MBCLEN_CHARFOUND_P(r)) {
+			enc = fptr->encs.enc;
+			goto invalid;
+		    }
 		    return io;
 		}
 	    }
 	    if (MBCLEN_INVALID_P(r)) {
-		rb_raise(rb_eArgError, "invalid byte sequence in %s",
-			 rb_enc_name(fptr->encs.enc));
+		enc = fptr->encs.enc;
+		goto invalid;
 	    }
 	    n = MBCLEN_CHARFOUND_LEN(r);
 	    if (fptr->encs.enc) {
-- 
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