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         jeremybenn | 
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         --                                                                          --
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         --                         GNAT COMPILER COMPONENTS                         --
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         --                                                                          --
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         --                              T R E E _ I N                               --
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         --                                                                          --
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         --                                 S p e c                                  --
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         --                                                                          --
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         --          Copyright (C) 1992-2009, Free Software Foundation, Inc.         --
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         --                                                                          --
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         -- GNAT is free software;  you can  redistribute it  and/or modify it under --
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         -- terms of the  GNU General Public License as published  by the Free Soft- --
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         -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
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         -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
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         -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
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         -- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
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         --                                                                          --
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         -- As a special exception under Section 7 of GPL version 3, you are granted --
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         -- additional permissions described in the GCC Runtime Library Exception,   --
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         -- version 3.1, as published by the Free Software Foundation.               --
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         --                                                                          --
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         -- You should have received a copy of the GNU General Public License and    --
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         -- a copy of the GCC Runtime Library Exception along with this program;     --
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         -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
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         -- <http://www.gnu.org/licenses/>.                                          --
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         --                                                                          --
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         -- GNAT was originally developed  by the GNAT team at  New York University. --
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         -- Extensive contributions were provided by Ada Core Technologies Inc.      --
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         --                                                                          --
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         ------------------------------------------------------------------------------
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         --  This procedure is used to read in a tree if the option is set. Note that
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         --  it is not part of the compiler proper, but rather the interface from
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         --  tools that need to read the tree to the tree reading routines, and is
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         --  thus bound as part of such tools.
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         with System.OS_Lib; use System.OS_Lib;
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         procedure Tree_In (Desc : File_Descriptor);
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         --  Desc is the file descriptor for the file containing the tree, as written
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         --  by the compiler in a previous compilation using Tree_Gen. On return the
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         --  global data structures are appropriately initialized.
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