[Caml-list] Ouch - when bytecode and native behave differently

[Caml-list] Ouch - when bytecode and native behave differently

[david.fox]

I just encountered a situation where the bytecode and native versions
of a program behave differently.  It turns out that out of bounds
array accesses return a different message:

  Invalid_argument "Array.get"

vs.

  Invalid_argument "out-of-bound array or string access"

I was catching the former but not the latter.  I don't know if I'm
making a mistake by paying attention to the message or if this is a
problem or issue in the standard libs, but I thought I'd point it out.
Thanks,

-david
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Re: [Caml-list] Ouch - when bytecode and native behave differently

[Henri Dubois-Ferriere]

This is filed as bug 1347 in the ocaml 'bugzilla'

Another similar bug is that in bytecode, a divide-by-zero is reported as
"Fatal error: exception Division_by_zero", whereas in native you get
"Floating point exception".

Henri


> I just encountered a situation where the bytecode and native versions
> of a program behave differently.  It turns out that out of bounds
> array accesses return a different message:
>
>   Invalid_argument "Array.get"
>
> vs.
>
>   Invalid_argument "out-of-bound array or string access"
>
> I was catching the former but not the latter.  I don't know if I'm
> making a mistake by paying attention to the message or if this is a
> problem or issue in the standard libs, but I thought I'd point it out.
> Thanks,
>
> -david
> -------------------
> To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr
> Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/
> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
>


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