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[Frama-c-discuss] [wp] type conversion check is less strict than Jessie?

  • Subject: [Frama-c-discuss] [wp] type conversion check is less strict than Jessie?
  • From: x_cui at (Xiao-lei Cui)
  • Date: Mon, 9 Dec 2013 01:02:57 -0500

Hi all,
   I used Jessie plug-in before I tried wp.   
   Jessie will not tolerate the following situation where a int constant is to be converted to unsigned int*
#define ARTAR                ( (unsigned int * )0x01f800e0) )
unsigned int  sr;
sr = ARTAR;    
[jessie] failure: Casting from type int to type struct unsigned_intP * not allowed

However, as I run wp plug-in over the same C file:
$ frama-c  -pp-annot  -wp -wp-rte -wp-prover why3ide file.c

I did not get any complaints from wp, and the VCs( very simple though) seems proved already:
[wp] Running WP plugin...
[wp] Collecting axiomatic usage
[rte] annotating function SerialBaud
[wp] Goal typed_SB_b1_post : trivial
[wp] Goal typed_SB_b2_post : trivial

Jessie and WP behaves so differently in type conversion check (for this case) ? Is it that type check is turned off by default in WP? or I did not invoke wp in the correct way..

Any hints would be appreciated. Thanks..


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