1 files changed, 4 insertions, 1 deletions
diff --git a/src/vdbeaux.c b/src/vdbeaux.c
index 9ea20628f..c7c212575 100644
--- a/src/vdbeaux.c
+++ b/src/vdbeaux.c
@@ -2602,7 +2602,10 @@ void sqlite3VdbeSetNumCols(Vdbe *p, int nResColumn){
 void sqlite3VdbeColumnInfoXfer(Vdbe *pTo, Vdbe *pFrom){
   sqlite3 *db = pTo->db;
   assert( db==pFrom->db );
-  sqlite3DbFree(db, pTo->aColName);
+  if( pTo->nResColumn ){
+    releaseMemArray(pTo->aColName, pTo->nResColumn*COLNAME_N);
+    sqlite3DbFree(db, pTo->aColName);
+  }
   pTo->aColName = pFrom->aColName;
   pFrom->aColName = 0;
   pTo->nResColumn = pFrom->nResColumn;