io.c (rb_io_check_writable): don't call io_seek if EOF flag is set,

to avoid clearing EOF flag.


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@5148 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 5 insertions, 3 deletions

diff --git a/ChangeLog b/ChangeLog
index 60ff6ca58..4ef0c2754 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,8 @@
-Tue Dec  9 12:49:22 2003  Tanaka Akira  <akr@m17n.org>
+Tue Dec  9 14:10:48 2003  Tanaka Akira  <akr@m17n.org>
 
-	* io.c (rb_io_check_readable): Don't clear EOF flag by io_seek.
+	* io.c (rb_io_check_readable): don't call io_seek if EOF flag is set,
+	  to avoid clearing EOF flag.
+	  (rb_io_check_writable): ditto.
 
 Tue Dec  9 02:53:55 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
 
diff --git a/io.c b/io.c
index aa3fc5536..593e1facc 100644
--- a/io.c
+++ b/io.c
@@ -243,7 +243,7 @@ rb_io_check_writable(fptr)
 	rb_raise(rb_eIOError, "not opened for writing");
     }
 #if NEED_IO_SEEK_BETWEEN_RW
-    if ((fptr->mode & FMODE_RBUF) && !fptr->f2) {
+    if ((fptr->mode & FMODE_RBUF) && !feof(fptr->f) && !fptr->f2) {
 	io_seek(fptr, 0, SEEK_CUR);
     }
 #endif