"ensures" clause of function template not supplied to Alt-Ergo
ID0002034: This issue was created automatically from Mantis Issue 2034. Further discussion may take place here.
| Id | Project | Category | View | Due Date | Updated |
|---|---|---|---|---|---|
| ID0002034 | Frama-Clang | Plug-in > clang | public | 2014-12-15 | 2015-02-15 |
| Reporter | Jochen | Assigned To | virgile | Resolution | open |
| 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 :
Running "frama-c -wp 411.cpp" generates, from the "assert" in line 12, an unprovable obligation (for Alt-Ergo), viz: "goal main_assert: forall i : int. is_sint32(i) -> (1 = i)", see line 570 of file "main_assert_Alt-Ergo.mlw".
If the function "nop" is made a non-template function (by uncommenting the typedef in line 4, and commenting-out the "template" prefix in line 7), the obligation reads "goal main_assert: forall i : int. (2 = (2 * i)) -> is_sint32(i) -> (1 = i)", and is proven without problems by Alt-Ergo.