From 6fea8d2e42a53a1c03e2e1ced68dda8a36e09153 Mon Sep 17 00:00:00 2001
From: Nuno Lopes <nunoplopes@sapo.pt>
Date: Tue, 16 Dec 2008 22:58:26 +0000
Subject: [PATCH] fix PR 3222: allow one to get the address of a global
 function in C++

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61111 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Sema/SemaExpr.cpp       | 6 ++++--
 test/SemaCXX/address-of.cpp | 6 +++++-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index affe2ae240..cdaa2fc49c 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -2889,7 +2889,7 @@ QualType Sema::CheckAddressOfOperand(Expr *op, SourceLocation OpLoc) {
   }
   NamedDecl *dcl = getPrimaryDecl(op);
   Expr::isLvalueResult lval = op->isLvalue(Context);
-  
+  printf("oleee\n");
   if (lval != Expr::LV_Valid) { // C99 6.5.3.2p1
     if (!dcl || !isa<FunctionDecl>(dcl)) {// allow function designators
       // FIXME: emit more specific diag...
@@ -2922,8 +2922,10 @@ QualType Sema::CheckAddressOfOperand(Expr *op, SourceLocation OpLoc) {
       return Context.OverloadTy;
     } else if (isa<FieldDecl>(dcl)) {
       // Okay: we can take the address of a field.
+    } else if (isa<FunctionDecl>(dcl)) {
+      // Okay: we can take the address of a function.
     }
-    else 
+    else
       assert(0 && "Unknown/unexpected decl type");
   }
   
diff --git a/test/SemaCXX/address-of.cpp b/test/SemaCXX/address-of.cpp
index 5451f32688..3d0e57f6e3 100644
--- a/test/SemaCXX/address-of.cpp
+++ b/test/SemaCXX/address-of.cpp
@@ -1,4 +1,4 @@
-// RUN: clang -fsyntax-only -verify %S
+// RUN: clang -fsyntax-only -verify %s
 // PR clang/3175
 
 void bar(int*);
@@ -29,3 +29,7 @@ template<int N>
 void test2() {
   (void)&N; // expected-error{{address expression must be an lvalue or a function designator}}
 }
+
+// PR clang/3222
+void xpto();
+void (*xyz)(void) = &xpto;
-- 
2.40.0