[Caml-list] Printf.sprintf and string_of_float

[Caml-list] Printf.sprintf and string_of_float

[matthieu.dubuget]

Hello.

I'm still using Ocaml 3.06.

I have a C program calling Ocaml functions.
As soon as I introduce Printf.sprintf function,
for example with:

let unused_later = Printf.sprintf "string" () ;;

Everything compiles normally, but when I run the program,
I obtain a definitive :

L'instruction à "0x..." emploie l'adresse mémoire "0X...".
La mémoire ne peut être "read".

I have really no idea in which direction to investigate to
solve this problem. Any idea?

Thanks in advance

Matthieu Dubuget

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Re: [Caml-list] Printf.sprintf and string_of_float

[Matthieu Dubuget]

samsaga2 a écrit :
> Why are you passing a unit to sprintf?
> 
> let unused_later = Printf.sprintf "string";;
> 
> let string_of_float (float_number : float) = Printf.sprintf "%f" 
> float_number;
> 
> This is ok for me

You are right, this was a typo in the mail. The line really added is

let unused_later = Printf.sprintf "string" ;;

But this is just an example. I just have to use Printf module
to crash my program.

The following line added in the ml file used to generate my lib/dll is another example:

let unused a = Printf.printf "%f" ;; 

Matthieu Dubuget

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