Functional dependencies are incorrect in presence of value analysis builtins
ID0000912: This issue was created automatically from Mantis Issue 912. Further discussion may take place here.
| Id | Project | Category | View | Due Date | Updated |
|---|---|---|---|---|---|
| ID0000912 | Frama-C | Plug-in > from | public | 2011-08-05 | 2014-01-28 |
| Reporter | yakobowski | Assigned To | yakobowski | Resolution | no change required |
| Priority | normal | Severity | minor | Reproducibility | always |
| Platform | - | OS | - | OS Version | - |
| Product Version | Frama-C Carbon-20110201 | Target Version | - | Fixed in Version | - |
Description :
The value analysis does not require its builtins to compute their functional dependencies. As a result, the obtained results are wrong for those functions. This impacts indirectly the pdg and slicing plugins.
The signature of Db.Value.register_builtin should probably be changed to return the needed dependencies, in the same way that was done from clobbered sets. (This should also be done for inputs and outputs; a generic behavior would be nice.)