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[Frama-c-discuss] Problem with int and integer in terms

  • Subject: [Frama-c-discuss] Problem with int and integer in terms
  • From: hollas at informatik.htw-dresden.de (Boris Hollas)
  • Date: Thu, 02 Aug 2012 09:53:44 +0200
Hello,

I have the following problem: I hash a term, but I can't find it later 
in the hashtable. I was able to narrow the problem down to the following:

In an assignment
int t = ...;
the lval t has type int, whereas an expression
t-1
has type integer. To construct a term of t, I use the function 
term_of_lval below. This should produce a term of type integer, but it 
doesn't. Instead, the result is a term of type int. Since the cast flag 
in Logic_utils.lval_to_term_lval is false, I'd have expected that int is 
cast to integer. What is wrong here?

-Boris


let term_of_lval x =
   Self.feedback "term_of_lval: input lval %a\n" Cil.d_lval x;
   let xtl = Logic_utils.lval_to_term_lval false x in
   let t = Logic_const.term (TLval xtl) (Cil.typeOfTermLval xtl) in
   Self.feedback "output has type %a\n" Cil.d_logic_type t.term_type;
   t