--- layout: fc_discuss_archives title: Message 49 from Frama-C-discuss on April 2010 ---
Claude Marche wrote: >> max1.c:2:[kernel] user error: Error during annotations analysis: >> unbound logic variable NULL >> > you need option -pp-annot of frama-c. You are right, it should be said > in the tutorial... > I should have said more: first the -pp-annot option is not recommended since it is not guaranteed to work in any environment, I think it requires gcc to be the preprocessor. I guess there is something about that in the FAQ? But anyway, ACSL provides a safe way to avoid any problems: \null denotes the null pointer. This is definitely the recommended way, and I will update the tutorial accordingly. - Claude -- Claude March? | tel: +33 1 72 92 59 69 INRIA Saclay - ?le-de-France | mobile: +33 6 33 14 57 93 Parc Orsay Universit? | fax: +33 1 74 85 42 29 4, rue Jacques Monod - B?timent N | http://www.lri.fr/~marche/ F-91893 ORSAY Cedex |