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  • #2189

Option -val-signed-overflow-alarms misses some overflow

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++; }

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