From 4798ad6447704a7e92219c5377a115202650f09d Mon Sep 17 00:00:00 2001
From: Arnaud Charlet <charlet@gcc.gnu.org>
Date: Mon, 27 Jul 2009 16:44:10 +0200
Subject: [PATCH] Add comments.

From-SVN: r150122
---
 gcc/ada/prj.ads | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gcc/ada/prj.ads b/gcc/ada/prj.ads
index ff2e01f0e49..e2aec8c673a 100644
--- a/gcc/ada/prj.ads
+++ b/gcc/ada/prj.ads
@@ -609,6 +609,8 @@ package Prj is
    No_Unit_Index : constant Unit_Index := null;
    --  Name and File and Path names of a unit, with a reference to its
    --  GNAT Project File(s).
+   --  Some units might have neither Spec nor Impl when they were created for
+   --  a "separate".
 
    type Source_Data is record
       Project                : Project_Id          := No_Project;