side effect of constructor call from global variable initialization ignored
ID0002002: This issue was created automatically from Mantis Issue 2002. Further discussion may take place here.
| Id | Project | Category | View | Due Date | Updated |
|---|---|---|---|---|---|
| ID0002002 | Frama-Clang | Plug-in > clang | public | 2014-12-01 | 2015-02-16 |
| Reporter | Jochen | Assigned To | virgile | Resolution | duplicate |
| Priority | normal | Severity | minor | Reproducibility | always |
| Platform | frama-c-Neon-20140301+dev-stance | OS | - | OS Version | xubuntu-cfe13.10 |
| Product Version | - | Target Version | - | Fixed in Version | - |
Description :
The attached program can be verified by "frama-c -wp 177.cpp", although printing x's value after line 11 reveals that the proven assertion there is false.
The reason is that x was set to 42 by the constructor call cls() from the declaration in line 8, but Frama-C doesn't consider the body code of line 5 when determining the value of x in line 11.
On the other hand, it seems that Frama-C is well aware about the declaration in line 8 calling the constructor in line 5: annotating the latter with "requires \false" produces an unproven obligation that vanishes again if line 8 is deleted.