Test breaks with --coverage option when parsing files ending with c-style comment

[RowdyElectron]

I have a file which ends with this line:

);/* End of process prefix group. */

Which causes this error:

{"error":{"type":"ErrorException","message":"Undefined offset: 59","file":"\/home\/philip\/projects\/parasol\/vendor\/phpunit\/php-code-coverage\/src\/CodeCoverage.php","line":697}}

I've been able to duplicate this error by placing:

);/**/

at the end of any processed php file. Appending to the end of a class doesn't cause any issue.