Frama-C-discuss mailing list archives

This page gathers the archives of the old Frama-C-discuss archives, that was hosted by Inria's gforge before its demise at the end of 2020. To search for mails newer than September 2020, please visit the page of the new mailing list on Renater.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Frama-c-discuss] Set global variables uninitialized at Value analysis start

Hello Pascal,

2013/5/27 Pascal Cuoq <pascal.cuoq at>:
> If it is only ?some? global variables that need to uninitialized,
> then you could mark them as such in your own main() before
> launching the real main():
> ~ $ cat un.c
> int a, b, c;
> int main(int argc, char **argv){
>   Frama_C_dump_each();
> }
> int uninitialize_and_main(int argc, char **argv){
>   // mark variable(s) as uninitialized
>   char uninitialized[640] ; // ought to be enough for anyone
> #define UNINIT(t, v) v = * (t *) uninitialized;
>   UNINIT(int, c);
>   return main(argc, argv);
> }
> ~ $ frama-c -val un.c -main uninitialize_and_main

Thanks a lot for the trick! This is exactly what I wanted. Doing such
kind of modification on my real program, I could catch an
uninitialized value! \o/

I have a bunch of globals (about 150) but I should be able to manage
that with some sed scripting.

Best regards,