PR1963: Address of function is a constant expression

llvm-svn: 49212

clang/lib/AST/Expr.cpp

@@ -453,6 +453,8 @@ bool Expr::hasGlobalStorage() const {
     const Decl *D = cast<DeclRefExpr>(this)->getDecl();
     if (const VarDecl *VD = dyn_cast<VarDecl>(D))
       return VD->hasGlobalStorage();
+    if (isa<FunctionDecl>(D))
+      return true;
     return false;
   }
   case MemberExprClass: {

clang/test/Sema/address-constant.c

@@ -5,3 +5,6 @@ int a[] = {0};
 struct { int i; } s;
 
 int *array[] = {&i, a, &s.i};
+
+extern void f(void);
+void (*f_addr)(void) = &f;