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Fix for Java infinite loop encoding into 0-sized buffer (#4654)

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Mitchel 2018-03-02 18:21:08 -05:00 • committed by Wouter van Oortmerssen
parent ec74f58b94
commit 0068b25132
1 changed files with 1 additions and 1 deletions
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java/com/google/flatbuffers/FlatBufferBuilder.java
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@ -196,7 +196,7 @@ public class FlatBufferBuilder {
int old_buf_size = bb.capacity();
if ((old_buf_size & 0xC0000000) != 0) // Ensure we don't grow beyond what fits in an int.
throw new AssertionError("FlatBuffers: cannot grow buffer beyond 2 gigabytes.");
int new_buf_size = old_buf_size << 1;
int new_buf_size = old_buf_size == 0 ? 1 : old_buf_size << 1;
bb.position(0);
ByteBuffer nbb = bb_factory.newByteBuffer(new_buf_size);
nbb.position(new_buf_size - old_buf_size);