From: Tanya Lattner <tonic@nondot.org>
Date: Wed, 17 Feb 2010 04:48:01 +0000 (+0000)
Subject: Do not add functions marked with the unused attribute to the list of unused functions... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c777221d22e2687938c061de6698ddcccbe00fdc;p=clang

Do not add functions marked with the unused attribute to the list of unused functions to warn about. Update test case.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96452 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index 1fc08ce031..3821113439 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -3135,7 +3135,7 @@ Sema::ActOnFunctionDeclarator(Scope* S, Declarator& D, DeclContext* DC,
   // FIXME: Also include static functions declared but not defined.
   if (!NewFD->isInvalidDecl() && IsFunctionDefinition 
       && !NewFD->isInlined() && NewFD->getLinkage() == InternalLinkage
-      && !NewFD->isUsed())
+      && !NewFD->isUsed() && !NewFD->hasAttr<UnusedAttr>())
     UnusedStaticFuncs.push_back(NewFD);
   
   return NewFD;
diff --git a/test/Sema/warn-unused-function.c b/test/Sema/warn-unused-function.c
index 1a2a50e1aa..b52f676ac5 100644
--- a/test/Sema/warn-unused-function.c
+++ b/test/Sema/warn-unused-function.c
@@ -24,3 +24,7 @@ static void f7(void);
 void f8(void(*a0)(void));
 void f9(void) { f8(f7); }
 static void f7(void) {}
+
+__attribute__((unused)) static void bar(void);
+void bar(void) { }
+