commit 48b89590f61575cbf365ba996a2bd1ba1561a4ab
author Argyrios Kyrtzidis <akyrtzi@gmail.com> Thu Mar 03 17:47:42 2011 +0000
committer Argyrios Kyrtzidis <akyrtzi@gmail.com> Thu Mar 03 17:47:42 2011 +0000
tree 23a144476f61233b585511ba46058dfe06a17c73
parent 159c0a099f980e76096df2d7ffb70dd061c1dc3b

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

lib/Sema/Sema.cpp

diff --git a/lib/Sema/Sema.cpp b/lib/Sema/Sema.cpp
index 0c39e13..bc398f4 100644
--- a/lib/Sema/Sema.cpp
+++ b/lib/Sema/Sema.cpp
@@ -451,6 +451,8 @@
         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)

test/SemaCXX/unused-functions.cpp

diff --git a/test/SemaCXX/unused-functions.cpp b/test/SemaCXX/unused-functions.cpp
index cefa9e1..f164bf2 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 @@
 T get_from_foo(T y) { return foo(y); }
 
 int g(int z) { return get_from_foo(z); }
+
+namespace { void f() = delete; }