ID0000893: **This issue was created automatically from Mantis Issue 893. Further discussion may take place here.** --- | **Id** | **Project** | **Category** | **View** | **Due Date** | **Updated** | | --- | --- | --- | --- | --- | --- | | ID0000893 | Frama-C | Plug-in > Eva | public | 2011-07-26 | 2011-07-26 | | | | | | | | | --- | --- | --- | --- | --- | --- | | **Reporter** | yakobowski | **Assigned To** | pascal | **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 emit an alarm on c++, even with option -val-signed-overflow-alarms. This is because c+1 is done on an int, which is cast back into unsigned char afterwards. void main () { signed char c=0; while(1) c++; }