* io.c (rb_io_getline): should not treat char as negative value.

  [ruby-dev:24460]


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@7018 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/io.c b/io.c
index 52e71f3df..98e3329ba 100644
--- a/io.c
+++ b/io.c
@@ -1405,7 +1405,7 @@ rb_io_getline(rs, fptr)
 	    swallow(fptr, '\n');
 	}
 	else if (rslen == 1) {
-	    return rb_io_getline_fast(fptr, RSTRING(rs)->ptr[0]);
+	    return rb_io_getline_fast(fptr, (unsigned char)RSTRING(rs)->ptr[0]);
 	}
 	else {
 	    rsptr = RSTRING(rs)->ptr;