Change so that deleting an Expr structure requires only one frame per level in the expression tree, not two.
FossilOrigin-Name: a4380ab326e4b0de29271c824d041193e86b7139
diff --git a/src/resolve.c b/src/resolve.c
index b763a80..d913a24 100644
--- a/src/resolve.c
+++ b/src/resolve.c
@@ -87,7 +87,13 @@
pDup->pColl = pExpr->pColl;
pDup->flags |= EP_ExpCollate;
}
- sqlite3ExprClear(db, pExpr);
+
+ /* Before calling sqlite3ExprDelete(), set the EP_Static flag. This
+ ** prevents ExprDelete() from deleting the Expr structure itself,
+ ** allowing it to be repopulated by the memcpy() on the following line.
+ */
+ ExprSetProperty(pExpr, EP_Static);
+ sqlite3ExprDelete(db, pExpr);
memcpy(pExpr, pDup, sizeof(*pExpr));
sqlite3DbFree(db, pDup);
}