From: Argyrios Kyrtzidis <akyrtzi@gmail.com>
Date: Thu, 3 Mar 2011 17:47:42 +0000 (+0000)
Subject: Don't emit unused warning for deleted functions. Fixes rdar://8365684 & http://llvm... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=48b89590f61575cbf365ba996a2bd1ba1561a4ab;p=clang

Don't emit unused warning for deleted functions. Fixes rdar://8365684 & http://llvm.org/PR9391.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126950 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Sema/Sema.cpp b/lib/Sema/Sema.cpp
index 0c39e13253..bc398f43ff 100644
--- a/lib/Sema/Sema.cpp
+++ b/lib/Sema/Sema.cpp
@@ -451,6 +451,8 @@ void Sema::ActOnEndOfTranslationUnit() {
         const FunctionDecl *DiagD;
         if (!FD->hasBody(DiagD))
           DiagD = FD;
+        if (DiagD->isDeleted())
+          continue; // Deleted functions are supposed to be unused.
         Diag(DiagD->getLocation(),
              isa<CXXMethodDecl>(DiagD) ? diag::warn_unused_member_function
                                        : diag::warn_unused_function)
diff --git a/test/SemaCXX/unused-functions.cpp b/test/SemaCXX/unused-functions.cpp
index cefa9e118a..f164bf2768 100644
--- a/test/SemaCXX/unused-functions.cpp
+++ b/test/SemaCXX/unused-functions.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -Wunused -verify %s
+// RUN: %clang_cc1 -std=c++0x -fsyntax-only -Wunused -verify %s
 
 static int foo(int x) { return x; }
 
@@ -6,3 +6,5 @@ template<typename T>
 T get_from_foo(T y) { return foo(y); }
 
 int g(int z) { return get_from_foo(z); }
+
+namespace { void f() = delete; }