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Issue created Aug 05, 2011 by Boris Yakobowski@byakoDeveloper

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.)

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