From e84abb92129f47caede7db918f5254806a8947f6 Mon Sep 17 00:00:00 2001
From: Maria Prinus <maria.prinus@mongodb.com>
Date: Wed, 5 Jun 2024 18:52:54 -0700
Subject: [PATCH] Revert "SERVER-84420: Remove unnecessary tasserts."

This reverts commit dd4297775866f976c72ab10dc0efbf03e83e6f72.
---
 src/mongo/db/pipeline/group_processor_base.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/mongo/db/pipeline/group_processor_base.h b/src/mongo/db/pipeline/group_processor_base.h
index a868dc16727..f2bfa1d8d23 100644
--- a/src/mongo/db/pipeline/group_processor_base.h
+++ b/src/mongo/db/pipeline/group_processor_base.h
@@ -132,6 +132,7 @@ public:
      * Should not be used once execution has begun.
      */
     std::vector<boost::intrusive_ptr<Expression>>& getMutableIdExpressions() {
+        tassert(7020503, "Can't mutate _id fields after initialization", !_executionStarted);
         return _idExpressions;
     }
 
@@ -147,6 +148,8 @@ public:
      * Should not be used once execution has begun.
      */
     std::vector<AccumulationStatement>& getMutableAccumulationStatements() {
+        tassert(
+            7020504, "Can't mutate accumulated fields after initialization", !_executionStarted);
         return _accumulatedFields;
     }