fix coverage reporting for gcc 8 and code that uses templates #157
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gcc 8 extended the output of gcov, some of the issue have been fixed, e.g. #127, #140
However the new reporting for "instances" is missing. As a result cpp-coveralls reports:
The fix is quite simple: ignore lines that are smaller than the size of the array. This works because gcov reports the total number of executions in the 1st occurrences, the instance reports than report the individual counts which sum up to the total count. For now coveralls does not support template variants, therefore we can just skip over it.