Which suppressions of a suppression file are actually used?

[Martin]

Hi,

is there a way to find out which suppressions of a suppression file are actually used?
Over time for our projects huge suppression files have accumulated, and I'd like to weed out all the lines which are not relevant any more.

Thanks,
Martin

P.S.: I have a feeling that this has been asked before, but I couldn't find it in the forum :-/

[Daniel Marjamäki]

If you use --enable=information then Cppcheck will tell you that.

Try this on some arbitrary file:

$ ./cppcheck --suppress=aaaa --enable=information test.cpp

Obviously.. no "aaaa" warning will be reported. So it is expected that you get such information from Cppcheck:

nofile:0:0: information: Unmatched suppression: aaaa [unmatchedSuppression]

This should work for inline suppressions and suppressions in file, as well..

[Martin]

This works, thanks!