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Possible fix for obscure corner case in https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=37868

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Sean Owen 2023-08-17 15:28:32 -05:00
parent fc2f1c9b0f
commit aa58f2ec30
1 changed files with 3 additions and 0 deletions
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core/src/main/java/com/google/zxing/oned/Code128Writer.java
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@ -249,6 +249,9 @@ public final class Code128Writer extends OneDimensionalCodeWriter {
static boolean[] produceResult(Collection<int[]> patterns, int checkSum) { static boolean[] produceResult(Collection<int[]> patterns, int checkSum) {
// Compute and append checksum // Compute and append checksum
checkSum %= 103; checkSum %= 103;
if (checkSum < 0) {
throw new IllegalArgumentException("Unable to compute a valid input checksum");
}
patterns.add(Code128Reader.CODE_PATTERNS[checkSum]); patterns.add(Code128Reader.CODE_PATTERNS[checkSum]);
// Append stop code // Append stop code