3 files changed, 1 insertions, 4 deletions
diff --git a/ext/dl/dl.c b/ext/dl/dl.c
index 1469ff82a7..d92347158f 100644
--- a/ext/dl/dl.c
+++ b/ext/dl/dl.c
@@ -542,7 +542,7 @@ rb_io_to_ptr(VALUE self)
   FILE     *fp;
 
   GetOpenFile(self, fptr);
-  fp = fptr->f;
+  fp = rb_io_stdio_file(fptr);
 
   return fp ? rb_dlptr_new(fp, sizeof(FILE), 0) : Qnil;
 }
diff --git a/ext/pty/pty.c b/ext/pty/pty.c
index d47acbe5b5..8e9e63036c 100644
--- a/ext/pty/pty.c
+++ b/ext/pty/pty.c
@@ -428,12 +428,10 @@ pty_getpty(argc, argv, self)
 
     rfptr->mode = rb_io_mode_flags("r");
     rfptr->fd = info.fd;
-    rfptr->f = rb_fdopen(info.fd, "r");
     rfptr->path = strdup(SlaveName);
 
     wfptr->mode = rb_io_mode_flags("w") | FMODE_SYNC;
     wfptr->fd = dup(info.fd);
-    wfptr->f = rb_fdopen(wfptr->fd, "w");
     wfptr->path = strdup(SlaveName);
 
     res = rb_ary_new2(3);
diff --git a/ext/socket/socket.c b/ext/socket/socket.c
index 9f8e747841..83a70b203d 100644
--- a/ext/socket/socket.c
+++ b/ext/socket/socket.c
@@ -183,7 +183,6 @@ init_sock(sock, fd)
 
     MakeOpenFile(sock, fp);
     fp->fd = fd;
-    fp->f = rb_fdopen(fd, "r+");
     fp->mode = FMODE_READWRITE;
     if (do_not_reverse_lookup) {
 	fp->mode |= FMODE_NOREVLOOKUP;