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-rw-r--r--ext/raindrops/my_fileno.h13
1 files changed, 4 insertions, 9 deletions
diff --git a/ext/raindrops/my_fileno.h b/ext/raindrops/my_fileno.h
index 00c5d29..646f31b 100644
--- a/ext/raindrops/my_fileno.h
+++ b/ext/raindrops/my_fileno.h
@@ -1,22 +1,17 @@
 #include <ruby.h>
 #include <ruby/io.h>
 
+#ifdef HAVE_RB_IO_DESCRIPTOR
+#        define my_fileno(io) rb_io_descriptor(io)
+#else /* Ruby <3.1 */
 static int my_fileno(VALUE io)
 {
-#ifdef HAVE_RB_IO_DESCRIPTOR
-        if (TYPE(io) != T_FILE)
-                io = rb_convert_type(io, T_FILE, "IO", "to_io");
-
-        return rb_io_descriptor(io);
-#else
         rb_io_t *fptr;
 
-        if (TYPE(io) != T_FILE)
-                io = rb_convert_type(io, T_FILE, "IO", "to_io");
         GetOpenFile(io, fptr);
 
         if (fptr->fd < 0)
                 rb_raise(rb_eIOError, "closed stream");
         return fptr->fd;
-#endif
 }
+#endif /* Ruby <3.1 !HAVE_RB_IO_DESCRIPTOR */