WP crashes on generation of PO for assigns clause (assertion failure in MemVar.ml)
ID0002126: This issue was created automatically from Mantis Issue 2126. Further discussion may take place here.
| Id | Project | Category | View | Due Date | Updated |
|---|---|---|---|---|---|
| ID0002126 | Frama-C | Plug-in > wp | public | 2015-06-02 | 2016-01-26 |
| Reporter | virgile | Assigned To | correnson | Resolution | fixed |
| Priority | normal | Severity | major | Reproducibility | always |
| Platform | - | OS | - | OS Version | - |
| Product Version | Frama-C GIT, precise the release id | Target Version | - | Fixed in Version | Frama-C Magnesium |
Description :
On the example source below, frama-c -wp reduced.i crashes with the following error: File "src/wp/MemVar.ml", line 491, characters 54-60: Assertion failed
Apparently (by inferring why the offending function in MemVar got called), the p1+0 in the assigns for fn1 leads WP to think that p1 should be instantiated with an array (in particular, if you remove the +0, everything is fine).
-- reduced.i /*@ assigns *(p1); */ int fn1(char *p1);
/*@ assigns \nothing; */ void fn2(void) { char pcr_index; fn1(&pcr_index); }