Re: ADA.STRINGS.INDEX_ERROR : a-strunb.adb:782

[Anh Vo <anhvofrcaus@gmail.com>]

On Monday, January 15, 2018 at 9:48:12 AM UTC-8, Dmitry A. Kazakov wrote:
> On 2018-01-15 18:22, Anh Vo wrote:
> > On Monday, January 15, 2018 at 12:29:41 AM UTC-8, Dmitry A. Kazakov wrote:
> >> On 15/01/2018 02:18, Mehdi Saada wrote:
> >>> This if statement exactly, seems to raise
> >>> "ADA.STRINGS.INDEX_ERROR : a-strunb.adb:782"(No indication of line, so I can't know more).
> >>
> >> There is a list of funny numbers following the exception message. Pass
> >> that list to
> >>
> >>      addr2line --exe=<program-name> <funny-numbers>
> >>
> >> That will give you the stack trace.
> >   
> > It is even better to use GNAT addition to print out full stack trace as shown in the snippet.
> > 
> > -- ...
> > 
> > exception
> > 
> > when Err : others =>
> > 
> >    Text_Io.Put_Line ("Houston we have a problem: " &
> >                                      Exceptions.Exception_Information (Err));
> >    Text_Io.Put_Line ("Traceback => " & GNAT.Traceback.Symbolic.Symbolic_Traceback(Err));
> > end [Ada Unit Name];
> 
> Even better to make AdaCore make this the default behavior when dealing 
> with unhandled exception. >>

At least for me, a debugger is never needed. I consider it a tremendous improvement.

> with unhandled exception. However considering that it took 20 years or 
> so to stop disabling integer overflow checks by default...

It was that long. It is late still better than never :-).  If it was me, I would do it in a day.

Anh Vo