[1.6.x] Fixes fake position handling, take 2 #6730
Merged
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Fixes #6720
Ref #5994
Problem
Sometimes the compiler returns a fake position such as
<macro>
.This causes this causes InvalidPathException on Windows if we try
to convert it into NIO path.
Solution
Looks for less-than sign in the VirtualFileRef and skip those.
Since BSP requires the diagnostic info to be associated with
files, we probably can't do much.