[clang-tidy] MoveConstructorInitCheck - Add parameter name to check message.

Reviewers: alexfh

Subscribers: aaron.ballman, cfe-commits

Differential Revision: http://reviews.llvm.org/D19849

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@268461 91177308-0d34-0410-b5e6-96231b3b80d8

clang-tidy/misc/MoveConstructorInitCheck.cpp

@@ -109,8 +109,9 @@ void MoveConstructorInitCheck::handleParamNotMoved(
   if (parmVarDeclRefExprOccurences(*MovableParam, *ConstructorDecl,
                                    *Result.Context) > 1)
     return;
-  auto DiagOut =
-      diag(InitArg->getLocStart(), "value argument can be moved to avoid copy");
+  auto DiagOut = diag(InitArg->getLocStart(),
+                      "value argument %0 can be moved to avoid copy")
+                 << MovableParam;
   DiagOut << FixItHint::CreateReplacement(
       InitArg->getSourceRange(),
       (Twine("std::move(") + MovableParam->getName() + ")").str());

test/clang-tidy/misc-move-constructor-init.cpp

@@ -96,7 +96,7 @@ struct TriviallyCopyable {
 
 struct Positive {
   Positive(Movable M) : M_(M) {}
-  // CHECK-MESSAGES: [[@LINE-1]]:28: warning: value argument can be moved to avoid copy [misc-move-constructor-init]
+  // CHECK-MESSAGES: [[@LINE-1]]:28: warning: value argument 'M' can be moved to avoid copy [misc-move-constructor-init]
   // CHECK-FIXES: Positive(Movable M) : M_(std::move(M)) {}
   Movable M_;
 };