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[Frama-c-discuss] Frama-c-discuss Digest, Vol 21, Issue 3

  • Subject: [Frama-c-discuss] Frama-c-discuss Digest, Vol 21, Issue 3
  • From: myungjin at jung.tec.toyota.co.jp (jung, myung-jin)
  • Date: Wed, 10 Feb 2010 14:12:00 +0900
  • In-reply-to: <mailman.111.1265281273.18955.frama-c-discuss@lists.gforge.inria.fr>
  • References: <mailman.111.1265281273.18955.frama-c-discuss@lists.gforge.inria.fr>
Dear Pascal,
I have one more example code for contexst-sensitive points-to analysis.
In the following simple code, can we get a slicing results that do not
contain line 24 using Frama-C?
In my understanding, line 24 should not be included if
contexst-sensitive points-to analysis is working correctly.

------------- START test code ------------

typedef signed char s1;
typedef signed short s2;
typedef signed long s4;
typedef unsigned char u1;
typedef unsigned short u2;
typedef unsigned long u4;
typedef float f4;
typedef double f8;

s2 f(s2* s2var)
{
return *s2var;
}

void main(void)
{
s2 s2t_1;
s2 s2t_2;
s2 s2t_3;
s2 s2t_4;
s2 s2t_5;
s2 s2t_6;

s2t_1 = 1; // line 24: should not be included
s2t_2 = 2;

s2t_3 = f(&s2t_1);
s2t_4 = f(&s2t_2);

s2t_5 = s2t_3;
s2t_6 = s2t_4; // line 31: criteria
}

------------- END test code ------------