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-rw-r--r--src/json.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/json.c b/src/json.c
index 176dcbfdb..a9425aecd 100644
--- a/src/json.c
+++ b/src/json.c
@@ -501,7 +501,8 @@ static void jsonAppendValue(
*/
static void jsonResult(JsonString *p){
if( p->bErr==0 ){
- sqlite3_result_text64(p->pCtx, p->zBuf, p->nUsed,
+ if( p->nAlloc>=p->nUsed+1 ) p->zBuf[p->nUsed] = 0;
+ sqlite3_result_text64(p->pCtx, p->zBuf, p->nUsed,
p->bStatic ? SQLITE_TRANSIENT : sqlite3_free,
SQLITE_UTF8);
jsonZero(p);