In -Wunneeded-internal-declaration, suppress the warning for variables which

might have been used in constant expressions, rather than suppressing it for
variables which are const. The important thing here is that such variables
can have their values used without actually being marked as 'used'.

llvm-svn: 166896

1 files changed, 14 insertions, 1 deletions

diff --git a/clang/test/SemaCXX/warn-unused-filescoped.cpp b/clang/test/SemaCXX/warn-unused-filescoped.cpp
index dbff4b0e68c..328d8bbb5b4 100644
--- a/clang/test/SemaCXX/warn-unused-filescoped.cpp
+++ b/clang/test/SemaCXX/warn-unused-filescoped.cpp
@@ -1,4 +1,5 @@
-// RUN: %clang_cc1 -fsyntax-only -verify -Wunused -Wunused-member-function %s
+// RUN: %clang_cc1 -fsyntax-only -verify -Wunused -Wunused-member-function -std=c++98 %s
+// RUN: %clang_cc1 -fsyntax-only -verify -Wunused -Wunused-member-function -std=c++11 %s
 
 static void f1(); // expected-warning{{unused}}
 
@@ -87,3 +88,15 @@ namespace rdar8733476 {
     foo();
   }
 }
+
+namespace test5 {
+  static int n = 0;
+  static int &r = n;
+  int f(int &);
+  int k = f(r);
+
+  static const int m = n; // expected-warning {{not needed and will not be emitted}}
+  int x = sizeof(m);
+  static const double d = 0.0; // expected-warning {{not needed and will not be emitted}}
+  int y = sizeof(d);
+}