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[Frama-c-discuss] beginner question about code using malloc

  • Subject: [Frama-c-discuss] beginner question about code using malloc
  • From: holger.ki at freenet.de (Holger Kiskowski)
  • Date: Sun, 3 Jun 2018 19:46:14 +0200
  • In-reply-to: <20180603102628.GA2254@localhost>
  • References: <20180603102628.GA2254@localhost>
* Holger Kiskowski <holger.ki at freenet.de> wrote:
> How can I verify this C program using frama-c?
> 
> #include <stdlib.h>
> 
> int main(void)
> {
>   char *p = malloc(2);
>   char s[2];
>   p[0] = 0;
>   s[0] = 0;
>   return 0;
> }

I take the question back.
If I guard against malloc returning NULL, EVA is indeed able to see the
write being in-bounces! :-)

The malloc implementation I use does never return NULL (embedded code).
So I can just use a custom malloc spec, where I remove the "or NULL"
case.

Sorry for the noise. :-)

Holger