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MemoryDataStore: Handle weird arguments values correctly

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Namely:
- Negative arguments to InputStream::skip(n).
- Large arguments to readAt(offset).
This commit is contained in:
Lanchon 2017-09-24 21:59:36 -03:00 committed by Ben Gruver
parent c645b9d546
commit b9a725e726
1 changed files with 2 additions and 2 deletions
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4
dexlib2/src/main/java/org/jf/dexlib2/writer/io/MemoryDataStore.java
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@ -105,13 +105,13 @@ public class MemoryDataStore implements DexDataStore {
} }
@Override public long skip(long n) throws IOException { @Override public long skip(long n) throws IOException {
int skipLength = (int)Math.min(n, size - position); int skipLength = (int)Math.max(0, Math.min(n, size - position));
position += skipLength; position += skipLength;
return skipLength; return skipLength;
} }
@Override public int available() throws IOException { @Override public int available() throws IOException {
return size - position; return Math.max(0, size - position);
} }
}; };
} }