From 0c4461ecb7cf59f03b857e469f8ac6bbcd258d50 Mon Sep 17 00:00:00 2001
From: Brian Anderson <andersrb@gmail.com>
Date: Thu, 30 Apr 2020 01:37:22 -0600
Subject: [PATCH] tidb_query_vec_executors: Fixed stack-borrowing
 undefined-behavior (#7709)

Signed-off-by: Brian Anderson <andersrb@gmail.com>
---
 .../tidb_query/src/batch/executors/slow_hash_aggr_executor.rs   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/tidb_query/src/batch/executors/slow_hash_aggr_executor.rs b/components/tidb_query/src/batch/executors/slow_hash_aggr_executor.rs
index cbb73ea97f2..a1c2905bb2a 100644
--- a/components/tidb_query/src/batch/executors/slow_hash_aggr_executor.rs
+++ b/components/tidb_query/src/batch/executors/slow_hash_aggr_executor.rs
@@ -279,7 +279,6 @@ impl<Src: BatchExecutor> AggregationExecutorImpl<Src> for SlowHashAggregationImp
             )?;
         }
 
-        let buffer_ptr = (&*self.group_key_buffer).into();
         for logical_row_idx in 0..logical_rows_len {
             let offset_begin = self.group_key_buffer.len();
 
@@ -363,6 +362,7 @@ impl<Src: BatchExecutor> AggregationExecutorImpl<Src> for SlowHashAggregationImp
                 }
             }
 
+            let buffer_ptr = (&*self.group_key_buffer).into();
             // Extra column is not included in `GroupKeyRefUnsafe` to avoid being aggr on.
             let group_key_ref_unsafe = GroupKeyRefUnsafe {
                 buffer_ptr,