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Newsgroups: comp.lang.ada
Date: Sun, 24 Jul 2016 01:43:11 -0700 (PDT)
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Subject: Re: Exception traceback when using TDM-GCC 5.1.0-3
From: ahlan.marriott@gmail.com
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Xref: news.eternal-september.org comp.lang.ada:31140
Date: 2016-07-24T01:43:11-07:00
List-Id: <comp.lang.ada>

 On Saturday, 23 July 2016 18:32:28 UTC+2, Simon Wright  wrote:
> ahlan@marriott.org writes:
> 
> > Our problem is that we don't get a traceback at all.
> > In AdaCore's GNAT the traceback is displayed by default in hex.
> > To convert that into a symbolic traceback we use Gnat.Traceback.Symbolic.
> > However this is not the problem.
> > The problem is that we don't get a traceback at all - ie the -E switch
> > doesn't seem to have the desired effect.
> 
> Using 32-bit TDM GCC 5.1.0 (tdm-1) on Windows 7 with this:
> 
>    procedure CE is
>       procedure Raiser (N : Positive) is
>       begin
>          Raiser (N - 1);
>       end Raiser;
>    begin
>       Raiser (5);
>    end CE;
> 
> I get this:
> 
>    >ce
> 
>    Execution terminated by unhandled exception
>    Exception name: CONSTRAINT_ERROR
>    Message: ce.adb:4 range check failed
>    Call stack traceback locations:
>    0x401533 0x401533 0x401533 0x40154b 0x4014e6 0x4010fb 0x77a73646 0x77a73619
> 
> and I can use the addr2line.exe that came with GNAT GPL 2014 (I just
> haven't got round to installing the 2016 release) to get this
> 
>    >addr2line.exe -e ce.exe 0x401533 0x401533 0x401533 0x40154b 0x4014e6 0x4010fb 0x77a73646 0x77a73619
>    C:\Users\Simon Wright/ce.adb:4
>    C:\Users\Simon Wright/ce.adb:4
>    C:\Users\Simon Wright/ce.adb:4
>    C:\Users\Simon Wright/ce.adb:7
>    C:/Users/Simon Wright/b~ce.adb:140
>    crt1.c:?
>    ??:0
>    ??:0

Dear Simon,
The Call stack traceback locations are what I was expecting but unfortunately are  missing when I raise an exception.
So the question is why.
Do you compile or build with different switches than me?

Ahlan