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From: andrei.krivoshei@gmail.com
Newsgroups: comp.lang.ada
Subject: Directory Operations
Date: Mon, 3 Nov 2008 08:27:36 -0800 (PST)
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Date: 2008-11-03T08:27:36-08:00
List-Id: <comp.lang.ada>

Hello.
I have a problem.
I need to write a DLL with a function, which returns the path to a
current directory under Windows XP.
I have't any problem with DLL itself, but when I try to use some
function from the package "GNAT.Directory_Operations" or
"Ada.Directories", I get the unexecutable DLL.
NOTE! The executable file is working, I talk only about DLL variant!

Thanks!

The code listing of my program is

========= Spec ============
with Interfaces.C.Strings; use Interfaces.C.Strings;

package FAD is

   procedure Pwd(Path_ptr: in out Chars_ptr );
   pragma Export(C, Pwd, "pwd");

end FAD;

========= Body ============
--  with Ada.Directories;
with Ada.Strings;
with GNAT.Directory_Operations;

package body FAD is
   package DOP renames GNAT.Directory_Operations;
   use Ada.Strings;

   procedure Pwd(Path_ptr: in out Chars_ptr ) is
--        use Ada.Directories;
      CStr: Chars_ptr;
      Path: String (1 .. 1024);
   begin
--      Path: String := "custom test string";  -- with this code line,
the DLL is executable
      Path := DOP.Get_Current_Dir;  -- with this code line, the DLL is
UNexecutable
      CStr := Null_Ptr; -- Value for test purposes only
      Path_ptr := CStr;
   end Pwd;

end FAD;