[clang-tidy] Fix misc-move-const-arg for move-only types.

Summary: Fix misc-move-const-arg false positives on move-only types.

Reviewers: sbenza

Reviewed By: sbenza

Subscribers: xazax.hun, cfe-commits

Differential Revision: https://reviews.llvm.org/D31160

llvm-svn: 302261

1 files changed, 6 insertions, 0 deletions

diff --git a/clang-tools-extra/clang-tidy/misc/MoveConstantArgumentCheck.cpp b/clang-tools-extra/clang-tidy/misc/MoveConstantArgumentCheck.cpp
index 058ad2b8b0b..c8ef94278e3 100644
--- a/clang-tools-extra/clang-tidy/misc/MoveConstantArgumentCheck.cpp
+++ b/clang-tools-extra/clang-tidy/misc/MoveConstantArgumentCheck.cpp
@@ -73,6 +73,12 @@ void MoveConstantArgumentCheck::check(const MatchFinder::MatchResult &Result) {
       Arg->getType().isTriviallyCopyableType(*Result.Context);
 
   if (IsConstArg || IsTriviallyCopyable) {
+    if (const CXXRecordDecl *R = Arg->getType()->getAsCXXRecordDecl()) {
+      for (const auto *Ctor : R->ctors()) {
+        if (Ctor->isCopyConstructor() && Ctor->isDeleted())
+          return;
+      }
+    }
     bool IsVariable = isa<DeclRefExpr>(Arg);
     const auto *Var =
         IsVariable ? dyn_cast<DeclRefExpr>(Arg)->getDecl() : nullptr;