$OpenBSD: patch-runtime_flang_backspace_c,v 1.1.1.1 2017/12/31 18:06:38 bcallah Exp $

No async IO support

Index: runtime/flang/backspace.c
--- runtime/flang/backspace.c.orig
+++ runtime/flang/backspace.c
@@ -45,12 +45,14 @@ _f90io_backspace(__INT_T *unit, __INT_T *bitv, __INT_T
 
   /* check for outstanding async i/o */
 
+#if 0
   if (f->asy_rw) { /* stop any async i/o */
     f->asy_rw = 0;
     if (Fio_asy_disable(f->asyptr) == -1) {
       return (__fortio_error(__io_errno()));
     }
   }
+#endif
 
   /* no backspace for direct access files:  */
   if (f->acc == FIO_DIRECT)
