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Added pointer index check to StructReader._pointerFieldIsNull and StructBuilder._pointerFieldIsNull

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This fixes an IndexOutOfBoundsException when checking for existence of later added fields which are only known on the receiver side (working with different schema versions)
This commit is contained in:
Amer Banet 2017-12-13 20:57:59 +01:00
parent 633b1f6199
commit 906bab78f9
2 changed files with 2 additions and 2 deletions
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2
runtime/src/main/java/org/capnproto/StructBuilder.java
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@ -167,7 +167,7 @@ public class StructBuilder {
}
protected final boolean _pointerFieldIsNull(int ptrIndex) {
return this.segment.buffer.getLong((this.pointers + ptrIndex) * Constants.BYTES_PER_WORD) == 0;
return ptrIndex >= this.pointerCount || this.segment.buffer.getLong((this.pointers + ptrIndex) * Constants.BYTES_PER_WORD) == 0;
}
protected final void _clearPointerField(int ptrIndex) {

2
runtime/src/main/java/org/capnproto/StructReader.java
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@ -151,7 +151,7 @@ public class StructReader {
}
protected final boolean _pointerFieldIsNull(int ptrIndex) {
return this.segment.buffer.getLong((this.pointers + ptrIndex) * Constants.BYTES_PER_WORD) == 0;
return ptrIndex >= this.pointerCount || this.segment.buffer.getLong((this.pointers + ptrIndex) * Constants.BYTES_PER_WORD) == 0;
}
protected final <T> T _getPointerField(FromPointerReader<T> factory, int ptrIndex) {