--- a/clang-tools-extra/clang-tidy/readability/NonConstParameterCheck.cpp	Wed Jul 21 10:27:27 2021 +0900
+++ b/clang-tools-extra/clang-tidy/readability/NonConstParameterCheck.cpp	Wed Nov 09 17:45:10 2022 +0900
@@ -83,6 +83,20 @@
       for (const auto *Arg : CE->arguments()) {
         markCanNotBeConst(Arg->IgnoreParenCasts(), true);
       }
+      // Data passed by nonconst reference should not be made const.
+      unsigned ArgNr = 0U;
+      if (const auto *CD = CE->getConstructor()) {
+        for (const auto *Par : CD->parameters()) {
+          if (ArgNr >= CE->getNumArgs())
+            break;
+          const Expr *Arg = CE->getArg(ArgNr++);
+          // Is this a non constant reference parameter?
+          const Type *ParType = Par->getType().getTypePtr();
+          if (!ParType->isReferenceType() || Par->getType().isConstQualified())
+            continue;
+          markCanNotBeConst(Arg->IgnoreParenCasts(), false);
+        }
+      }
     } else if (const auto *R = dyn_cast<ReturnStmt>(S)) {
       markCanNotBeConst(R->getRetValue(), true);
     } else if (const auto *U = dyn_cast<UnaryOperator>(S)) {
@@ -93,6 +107,9 @@
     if ((T->isPointerType() && !T->getPointeeType().isConstQualified()) ||
         T->isArrayType())
       markCanNotBeConst(VD->getInit(), true);
+    else if (T->isLValueReferenceType() &&
+             !T->getPointeeType().isConstQualified())
+      markCanNotBeConst(VD->getInit(), false);
   }
 }