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

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This commit is contained in:
Sean Owen 2021-08-30 20:06:44 -05:00
parent 73a3c3a704
commit dc6c8ea422
1 changed files with 3 additions and 0 deletions
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3
core/src/main/java/com/google/zxing/pdf417/decoder/ec/ErrorCorrection.java
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@ -166,6 +166,9 @@ public final class ErrorCorrection {
ModulusPoly errorLocator, ModulusPoly errorLocator,
int[] errorLocations) { int[] errorLocations) {
int errorLocatorDegree = errorLocator.getDegree(); int errorLocatorDegree = errorLocator.getDegree();
if (errorLocatorDegree < 1) {
return new int[0];
}
int[] formalDerivativeCoefficients = new int[errorLocatorDegree]; int[] formalDerivativeCoefficients = new int[errorLocatorDegree];
for (int i = 1; i <= errorLocatorDegree; i++) { for (int i = 1; i <= errorLocatorDegree; i++) {
formalDerivativeCoefficients[errorLocatorDegree - i] = formalDerivativeCoefficients[errorLocatorDegree - i] =