2 files changed, 7 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index b84c8e5254..f6c32f285c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Oct  2 16:26:49 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* io.c (rb_io_close_read): duplex IO should wait its child process
+	  even after close_read.
+
 Wed Oct  2 15:39:13 2013  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* vm_core.h: use __has_attribute() instead of __clang__major__ because
diff --git a/io.c b/io.c
index 15fc799d69..5261c3ee5c 100644
--- a/io.c
+++ b/io.c
@@ -4433,6 +4433,8 @@ rb_io_close_read(VALUE io)
     if (io != write_io) {
 	rb_io_t *wfptr;
 	GetOpenFile(write_io, wfptr);
+	wfptr->pid = fptr->pid;
+	fptr->pid = 0;
         RFILE(io)->fptr = wfptr;
 	/* bind to write_io temporarily to get rid of memory/fd leak */
 	fptr->tied_io_for_writing = 0;