diff --git a/clang/lib/StaticAnalyzer/Core/RangeConstraintManager.cpp b/clang/lib/StaticAnalyzer/Core/RangeConstraintManager.cpp
--- a/clang/lib/StaticAnalyzer/Core/RangeConstraintManager.cpp
+++ b/clang/lib/StaticAnalyzer/Core/RangeConstraintManager.cpp
@@ -2616,7 +2616,18 @@
       if (OldState == State)
         continue;
 
-      assert(find(State, MemberSym) == find(State, SimplifiedMemberSym));
+      // Be aware that `SimplifiedMemberSym` might refer to an already dead
+      // symbol. In that case, the eqclass of that might not be the same as the
+      // eqclass of `MemberSym`. This is because the dead symbols are not
+      // preserved in the `ClassMap`, hence
+      // `find(State, SimplifiedMemberSym)` will result in a trivial eqclass
+      // compared to the eqclass of `MemberSym`.
+      // These eqclasses should be the same if `SimplifiedMemberSym` is alive.
+      // --> assert(find(State, MemberSym) == find(State, SimplifiedMemberSym))
+      //
+      // Note that `MemberSym` must be alive here since that is from the
+      // `ClassMembers` where all the symbols are alive.
+
       // Remove the old and more complex symbol.
       State = find(State, MemberSym).removeMember(State, MemberSym);