Only start of file is reported as covered

[nhnb]

Hi,

I have a case in which only the the start of a file is reported covered, but the end is reported as uncovered.

http://filebin.ca/utptb3660di/half-covered.zip contains a report.html (including the source code), the instrumented .class file and the cobertura.ser from the test run.

The uncovered section starts around line 500. The first method there is checkVersionConflict in line 506. It is shown as uncovered. In line 409, however, this method is invoked 44 times.

In the past, the coverage report was correct on Java 6 with Cobertura 1.9. The issues occurs on Java 7 with Cobertura 2.0.3 and Cobertura 2.0.4-snapshot.

[christ66]

I see where the bug is. If you use a decompiler like JD, you will see that there is something that is happening where "__cobertura_counters[i] += 1; i = 0;" is being inserted. This should never happen as that i variable should not be around, and the __cobertura_counters should be using a constant integer instead. Maybe it's trying to use the i value when the file is very large or has a lot of complexity. I will investigate how to reproduce this for the weekend.

[dwdyer]

I'm seeing a similar problem. Upgrading from 1.9 to 2.0.3 sees my coverage drop from 79.3% to 77.1% and there are certain sections of code that are clearly being executed but are being reported as uncovered.

The project is open source so if you need a way to reproduce the problem, I can provide that.