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-rw-r--r--src/lookup/pinyin_lookup2.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lookup/pinyin_lookup2.h b/src/lookup/pinyin_lookup2.h
index 19f0313..ac4bdaa 100644
--- a/src/lookup/pinyin_lookup2.h
+++ b/src/lookup/pinyin_lookup2.h
@@ -224,7 +224,7 @@ public:
* Clear one constraint in the constraints on the guessed sentence.
*
*/
- bool clear_constraint(CandidateConstraints constraints, int index);
+ bool clear_constraint(CandidateConstraints constraints, size_t index);
/**
* PinyinLookup2::validate_constraint: