ID0000117: **This issue was created automatically from Mantis Issue 117. Further discussion may take place here.** --- | **Id** | **Project** | **Category** | **View** | **Due Date** | **Updated** | | --- | --- | --- | --- | --- | --- | | ID0000117 | Frama-C | Kernel | public | 2009-06-05 | 2009-06-23 | | | | | | | | | --- | --- | --- | --- | --- | --- | | **Reporter** | sboldo | **Assigned To** | virgile | **Resolution** | fixed | | **Priority** | normal | **Severity** | major | **Reproducibility** | always | | **Platform** | - | **OS** | - | **OS Version** | - | | **Product Version** | Frama-C GIT, precise the release id | **Target Version** | - | **Fixed in Version** | Frama-C Beryllium-20090601-beta1 | ### Description : From ACSL, I assume that "C integral types char , short , int and long , signed or unsigned, are all subtypes of type integer ; integer is itself a subtype of type real ;" Therefore int is a subtype of real. But it does not work in practice: int i; /*@ loop invariant C== \pow(2., i) */ \pow takes 2 real numbers. This annotation is refused by the message: Error during analysis of annotation: invalid implicit conversion from int to real