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Diffstat (limited to 'core/src/fxcodec/jbig2/JBig2_ArithDecoder.h')
-rw-r--r--core/src/fxcodec/jbig2/JBig2_ArithDecoder.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/core/src/fxcodec/jbig2/JBig2_ArithDecoder.h b/core/src/fxcodec/jbig2/JBig2_ArithDecoder.h
index 214688d3b2..33bbe39d0d 100644
--- a/core/src/fxcodec/jbig2/JBig2_ArithDecoder.h
+++ b/core/src/fxcodec/jbig2/JBig2_ArithDecoder.h
@@ -72,6 +72,10 @@ inline void CJBig2_ArithDecoder::BYTEIN()
}
inline int CJBig2_ArithDecoder::DECODE(JBig2ArithCtx *pCX)
{
+ if (!pCX || pCX->I >= JBIG2_QE_NUM) {
+ return 0;
+ }
+
int D;
const JBig2ArithQe * qe = &QeTable[pCX->I];
A = A - qe->Qe;