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ZFastTrie - null pointer on add operation #5

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cornelcreanga opened this issue Apr 22, 2019 · 1 comment
Closed

ZFastTrie - null pointer on add operation #5

cornelcreanga opened this issue Apr 22, 2019 · 1 comment

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@cornelcreanga
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Error message:

Exception in thread "main" java.lang.NullPointerException
at it.unimi.dsi.sux4j.util.ZFastTrie.addBefore(ZFastTrie.java:778)
at it.unimi.dsi.sux4j.util.ZFastTrie.add(ZFastTrie.java:1153)
at java.base/java.util.AbstractCollection.addAll(AbstractCollection.java:352)
at com.creanga.sux4jissues.ZFastTrieNullPointer.main(ZFastTrieNullPointer.java:17)

Sux4J version: 4.3.0

To reproduce the issue run the following class:

https://github.com/cornelcreanga/Sux4J-issues/blob/master/src/main/java/com/creanga/sux4jissues/ZFastTrieNullPointer.java
@vigna
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vigna commented Apr 22, 2019

You cannot use a non-prefix-free transformation. It's written clearly in the documentation.

@vigna vigna closed this as completed Apr 22, 2019
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@cornelcreanga @vigna