Error Occurs When Using Content Assist on File::listFiles in Specific Situations

[HeikoKlare]

Current Behavior

When using the content assist on specific usages of File::listFiles, an error occurs:

This can be traced back to an ArrayOutOfBoundsException in JDT. For a detailed documentation of the issue, see eclipse-jdt/eclipse.jdt.core#1330

Expected Behavior

No error should occur.

[HeikoKlare]

Pull request with initial fix proposal submitted by @ShahzaibIbrahim in eclipse-jdt/eclipse.jdt.core#1419.

Issue requires more effort for root cause investigation, thus pushed back to "ready" in backlog. Can be picked again.