From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID,
	WEIRD_QUOTING autolearn=no autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,c80fd2eef5d1bef,start
X-Google-Attributes: gid103376,public
From: Gautier <gautier.demontmollin@maths.unine.ch>
Subject: GNAT.Traceback is back...
Date: 2000/05/24
Message-ID: <392C3C90.145FE2AF@maths.unine.ch>#1/1
X-Deja-AN: 626872797
Content-Transfer-Encoding: 7bit
X-Accept-Language: en
Content-Type: text/plain; charset=us-ascii
X-Trace: 24 May 2000 22:33:20 +0100, mac13-32.unine.ch
Organization: Maths - Uni =?iso-8859-1?Q?Neuch=E2tel?=
MIME-Version: 1.0
Newsgroups: comp.lang.ada
Date: 2000-05-24T00:00:00+00:00
List-Id: <comp.lang.ada>

Hi all.

Some mysteries around GNAT.Traceback in GNAT 3.12p for Win32 are not
resolved.

 1) Does GNAT.Traceback really work on GNAT 3.12p for Win32 ?
    We know that the .Symbolic child works only for Linux and Solaris,
    as stated in the user's guide. Yes, I've built with the options
    "gnatmake -funwind-tables -g tractest -bargs -E", but all I
    obtain is 0 callback levels (like Christophe Gouiran in his post
    about that) !

 2) Assume I could obtain more than 0 levels, but I don't
    have a working package to transform addresses into names.
    How to do it by calling gdb ? Is there a gdb command for that ?

 3) Will GNAT 3.13p bring symbolic call-backs for Win32 ?

Below is an expanded version of Christophe's example.
Ironically I obtain 2 levels & addresses in GNAT 3.12p for DOS...

______________________________________________________
Gautier  --  http://members.xoom.com/gdemont/gsoft.htm
______________________________________________________

with Ada.Text_IO;                       use Ada.Text_IO;

with GNAT.Debug_Utilities;              use GNAT.Debug_Utilities;
with GNAT.Traceback;                    use GNAT.Traceback;

procedure Tractest is 
  package IIO is new Integer_IO( integer ); use IIO;

  procedure D(i,j,k:integer; s:string) is... [it raises an exception]
  procedure C(i,j,k:integer) is...
  procedure B(i,j:integer) is...
  procedure A(n:natural) is...

begin
   A(10);

   exception when others =>
      declare
         tarray : Tracebacks_Array(1 .. 100);
         len    : integer;
      begin
         Call_Chain(tarray, len);

         new_line;
         put_line("Unhandled exception in main procedure ""TracTest"" ");
         put_line("Number of callback levels : " & integer'image(len));
         new_line;
         
         for i in 1..len loop
           Put("Level "); Put( i ); Put_Line("   " & Image(tarray(i)) );
         end loop;

         raise; -- -> output exception name & co
      end;

end Tractest;