[Cppcheck 2.18.0] serious regression (--cppcheck-build-dir)

Static source code analysis tool for C and C++ code

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[Cppcheck 2.18.0] serious regression (--cppcheck-build-dir)

Forum: Development

Creator: Dave Ohlsson

Created: 2 days ago

Updated: 2 days ago

Dave Ohlsson - 2 days ago

Cppcheck has a very useful option: --cppcheck-build-dir. According to --help, one advantage of this option is:

faster analysis; Cppcheck will reuse the results if the hash for a file is unchanged.

And indeed, when we run Cppcheck 2.14.2 on our whole project with --cppcheck-build-dir, the first time takes about 14 minutes, but if we run Cppcheck again with --cppcheck-build-dir without making any changes to the code to be analyzed, it now takes only about 1 minute.

With Cppcheck 2.18.0, however, we do not observe any speed-up. Running Cppcheck on our whole project with --cppcheck-build-dir takes about 15 minutes the first time, and also the second time.

I didn't try with versions between 2.14.2 and 2.18.0.

Is this a known regression?
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CHR - 2 days ago

Thanks for reporting, ticket is here: https://trac.cppcheck.net/ticket/14064

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