(_hurd_alloc_fd): When expanding the dtable, make sure the new size exceeds FIRST_FD.

diff --git a/hurd/alloc-fd.c b/hurd/alloc-fd.c
index 02a1bdf..e83618a 100644 (file)
--- a/hurd/alloc-fd.c
+++ b/hurd/alloc-fd.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1994 Free Software Foundation, Inc.
+/* Copyright (C) 1994, 1995 Free Software Foundation, Inc.
 This file is part of the GNU C Library.
 
 The GNU C Library is free software; you can redistribute it and/or
@@ -89,17 +89,20 @@ _hurd_alloc_fd (int *fd, int first_fd)
          /* Enlarge the table.  */
          int save = errno;
          struct hurd_fd **new;
-         /* Try to double the table size (but don't exceed the limit).
-            If there isn't any at all, give it three slots (because
-            stdio will take that many anyway).  */
-         int size = _hurd_dtablesize ? _hurd_dtablesize * 2 : 3;
+         /* Try to double the table size, but don't exceed the limit,
+            and make sure it exceeds FIRST_FD.  */
+         int size = _hurd_dtablesize * 2;
          if (size > rlimit)
            size = rlimit;
+         else if (size <= first_fd)
+           size = first_fd + 1;
+
          /* If we fail to allocate that, decrement the desired size
             until we succeed in allocating it.  */
          do
            new = realloc (_hurd_dtable, size * sizeof (*_hurd_dtable));
-         while (new == NULL && size-- > _hurd_dtablesize);
+         while (new == NULL && size-- > first_fd);
+
          if (new != NULL)
            {
              /* We managed to allocate a new table.  Now install it.  */