Code Coverage for Zig with Callgrind

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  • kcov

    Code coverage tool for compiled programs, Python and Bash which uses debugging information to collect and report data without special compilation options

    This is a nice write-up. Since zig has quite extensive compile-time functionality, one drawback is it is often easy to miss untested branches, especially for non-native targets if they are not regularly tested. It would be quite beneficial to be able to collate and coverage reports to get a full picture of the tested code.

    I have previously used kcov [1] to perform coverage testing which due to zig having good DWARF debugging information worked with no fanfare. However, I'm not too familiar with the shortcomings of this method vs. the more fully instrumented binary approach provided.

    [1] https://github.com/SimonKagstrom/kcov

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