unsoundness after external function call
ID0002315: This issue was created automatically from Mantis Issue 2315. Further discussion may take place here.
| Id | Project | Category | View | Due Date | Updated |
|---|---|---|---|---|---|
| ID0002315 | Frama-C | Plug-in > Eva | public | 2017-07-01 | 2017-07-03 |
| Reporter | maxime | Assigned To | yakobowski | Resolution | no change required |
| Priority | high | Severity | block | Reproducibility | always |
| Platform | - | OS | - | OS Version | - |
| Product Version | Frama-C 15-Phosphorus | Target Version | - | Fixed in Version | - |
Description :
Hi everyone,
Frama-C is unsound after an external function call. See the attached file.
Running frama-c -val unsound.c gives me: [value] Called Frama_C_show_each_r({1})
This is wrong. The call to the external function f can update **x, and so *y can be anything.
At the call to f(x), I think you should grab all the base addresses that are reachable by the arguments and set them to TOP.
Steps To Reproduce :
frama-c -val unsound.c
Attachments
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