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-rw-r--r--src/storage/ngram.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/storage/ngram.cpp b/src/storage/ngram.cpp
index 15165fd..f2e0aa3 100644
--- a/src/storage/ngram.cpp
+++ b/src/storage/ngram.cpp
@@ -283,6 +283,8 @@ bool merge_single_gram(SingleGram * merged, const SingleGram * system,
MemoryChunk & merged_chunk = merged->m_chunk;
+ merged_chunk.set_size(0);
+
if (NULL == system) {
merged_chunk.set_content(0, user->m_chunk.begin(),
user->m_chunk.size());