Byte overflow leading to index-out-of-bounds exception

[smoelius]

Consider changing these instances of Byte to Integer:

javafuzz/core/src/main/java/dev/fuzzit/javafuzz/core/Corpus.java

Line 322 in 342735a

List<Byte> digits = new ArrayList<Byte>();

and eliminating this cast:

javafuzz/core/src/main/java/dev/fuzzit/javafuzz/core/Corpus.java

Line 325 in 342735a

digits.add((byte)k);

It is easy to overflow a Byte. Moreover, because a Byte is signed, an overflow can result in a negative value and an ArrayIndexOutOfBoundsException on this line:

javafuzz/core/src/main/java/dev/fuzzit/javafuzz/core/Corpus.java

Line 333 in 342735a

int was = res[digits.get(pos)];

Such was the case with a corpus I was using.