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-rw-r--r--lib/lz4hc.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/lz4hc.c b/lib/lz4hc.c
index 46c20bc..d9e55a0 100644
--- a/lib/lz4hc.c
+++ b/lib/lz4hc.c
@@ -998,6 +998,11 @@ static void LZ4HC_setExternalDict(LZ4HC_CCtx_internal* ctxPtr, const BYTE* newBl
if (ctxPtr->end >= ctxPtr->base + ctxPtr->dictLimit + 4)
LZ4HC_Insert (ctxPtr, ctxPtr->end-3); /* Referencing remaining dictionary content */
+ /* cannot reference an extDict and a dictCtx at the same time */
+ if (ctxPtr->dictCtx != NULL) {
+ ctxPtr->dictCtx = NULL;
+ }
+
/* Only one memory segment for extDict, so any previous extDict is lost at this stage */
ctxPtr->lowLimit = ctxPtr->dictLimit;
ctxPtr->dictLimit = (U32)(ctxPtr->end - ctxPtr->base);