Negative sequence point coverage when line executions exceed int.MaxValue

Package: coverlet.msbuild Version: 3.1.0 Format: opencover

In a project where a particular line of code gets called a lot, the sequence point coverage value for that line can become negative if the line is hit more than int.MaxValue times. The value in the XML is negative and shows in the generated report as uncovered.

I created a simple repro of this because I cannot show the actual code that caused the problem (it’s from my job).

XML:

Report:

Repro code: https://github.com/Malivil/Coverlet1266Repro

[daveMueller]

An alternative is to translate negative numbers to int.MaxValue when collecting the results.

Then should we go with this solution? I could prepare a PR in the next days.

[daveMueller]

Thanks for reporting and thanks for the repro. 🙏