From 32aa8823cf321c064fbdbf47fdace6cdc013ffcc Mon Sep 17 00:00:00 2001
From: Simon Liu <331435+monadbobo@users.noreply.github.com>
Date: Mon, 14 Oct 2019 10:26:19 +0800
Subject: [PATCH] Fixed an undefined behavior. (#1039)
2 Replace static_cast with dynamic_cast.
---
src/executor/FetchExecutor.cpp | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/executor/FetchExecutor.cpp b/src/executor/FetchExecutor.cpp
index 26dcc9be..b2d8df0a 100644
--- a/src/executor/FetchExecutor.cpp
+++ b/src/executor/FetchExecutor.cpp
@@ -34,11 +34,11 @@ Status FetchExecutor::prepareYield() {
// such as YIELD 1+1, it has not type in schema, the type from the eval()
colTypes_.emplace_back(nebula::cpp2::SupportedType::UNKNOWN);
if (col->expr()->isAliasExpression()) {
- colNames_.emplace_back(*static_cast<InputPropertyExpression*>(col->expr())->prop());
+ colNames_.emplace_back(*dynamic_cast<AliasPropertyExpression*>(col->expr())->prop());
continue;
} else if (col->expr()->isTypeCastingExpression()) {
// type cast
- auto exprPtr = static_cast<TypeCastingExpression*>(col->expr());
+ auto exprPtr = dynamic_cast<TypeCastingExpression*>(col->expr());
colTypes_.back() = ColumnTypeToSupportedType(exprPtr->getType());
}
--
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