OutOfMemoryError: Requested array size exceeds VM limit

[Seanalair]

I get the following error whenever I try to run generate-database.sh with my own fonts in the fonts folder (or even with certain subsets of the provided fonts, such as KhmerOS.ttf on its own):

Exception in thread "main" java.lang.OutOfMemoryError: Requested array size exceeds VM limit
    at com.google.typography.font.sfntly.data.MemoryByteArray.<init>(Unknown Source)
    at com.google.typography.font.sfntly.data.WritableFontData.createWritableFontData(Unknown Source)
    at com.google.typography.font.sfntly.Font$Builder.loadTableData(Unknown Source)
    at com.google.typography.font.sfntly.Font$Builder.loadFont(Unknown Source)
    at com.google.typography.font.sfntly.Font$Builder.getOTFBuilder(Unknown Source)
    at com.google.typography.font.sfntly.FontFactory.loadSingleOTFForBuilding(Unknown Source)
    at com.google.typography.font.sfntly.FontFactory.loadSingleOTF(Unknown Source)
    at com.google.typography.font.sfntly.FontFactory.loadFonts(Unknown Source)
    at fr.free.nrw.DatabaseGenerator.fontHasCharacter(DatabaseGenerator.java:148)
    at fr.free.nrw.DatabaseGenerator.generate(DatabaseGenerator.java:71)
    at fr.free.nrw.DatabaseGenerator.main(DatabaseGenerator.java:170)

I have tried editing the script to allocate more memory for java (using -Xmx2048m), but it doesn't resolve the issue. Thanks in advance for your help!

[nicolas-raoul]

Thanks for the report!
So, the same problem happens even with only KhmerOS.ttf? Do I understand correctly?
What is your java version and operating system? How much RAM do you have?

[Seanalair]

That's correct, the problem can be reproduced by removing the other two fonts from the font folder. My version was Java 8 Update 60, but your question prompted me to check for updates and download the latest version (Java 8 Update 73). The problem persists on this version as well. I'm using a Macbook Pro running El Capitan with 16GB RAM.