Imprecise result on almost deterministic program
ID0001074: **This issue was created automatically from Mantis Issue 1074. Further discussion may take place here.** --- | **Id** | **Project** | **Category** | **View** | **Due Date** | **Updated** | | --- | --- | --- | --- | --- | --- | | ID0001074 | Frama-C | Plug-in > Eva | public | 2012-01-28 | 2012-09-19 | | | | | | | | | --- | --- | --- | --- | --- | --- | | **Reporter** | yakobowski | **Assigned To** | pascal | **Resolution** | fixed | | **Priority** | normal | **Severity** | major | **Reproducibility** | always | | **Platform** | - | **OS** | - | **OS Version** | - | | **Product Version** | Frama-C Nitrogen-20111001 | **Target Version** | - | **Fixed in Version** | Frama-C Oxygen-20120901 | ### Description : ----- memsetff.c -------- int t[10]; void main (char c) { for (int i=0;i<sizeof(t);i++) ((char*)t)[i]=0xFF; Frama_C_show_each(t[1]); if(c) t[1] = 1; } ------------------------ To be tested with frama-c -val memsetff.c -precise-unions -big-ints-hex 0x10 -slevel 100000 (-precise-unions has not effect in this case) The obtained possible values for t[1] are [1] ? [--..--], which is over-approximated.
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