Add a test for RTTI visibility.

llvm-svn: 124543

1 files changed, 35 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/rtti-visibility.cpp b/clang/test/CodeGenCXX/rtti-visibility.cpp
new file mode 100644
index 00000000000..4b3f6b2d1c2
--- /dev/null
+++ b/clang/test/CodeGenCXX/rtti-visibility.cpp
@@ -0,0 +1,35 @@
+// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o %t
+// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -fhidden-weak-vtables -emit-llvm -o %t.hidden
+// RUN: FileCheck --check-prefix=CHECK-TEST1 %s < %t
+// RUN: FileCheck --check-prefix=CHECK-TEST2 %s < %t
+// RUN: FileCheck --check-prefix=CHECK-TEST2-HIDDEN %s < %t.hidden
+
+#include <typeinfo>
+
+namespace Test1 {
+  // A is explicitly marked hidden, so all RTTI data should also be marked hidden.
+  // CHECK-TEST1: @_ZTSN5Test11AE = linkonce_odr hidden constant
+  // CHECK-TEST1: @_ZTIN5Test11AE = linkonce_odr hidden unnamed_addr constant
+  // CHECK-TEST1: @_ZTSPN5Test11AE = linkonce_odr hidden constant
+  // CHECK-TEST1: @_ZTIPN5Test11AE = linkonce_odr hidden unnamed_addr constant
+  struct __attribute__((visibility("hidden"))) A { };
+
+  void f() {
+    (void)typeid(A);
+    (void)typeid(A *);
+  }
+}
+
+namespace Test2 {
+  // A is weak, so its linkage should be linkoce_odr, but not marked hidden.
+  // CHECK-TEST2: @_ZTSN5Test21AE = linkonce_odr constant
+  // CHECK-TEST2: @_ZTIN5Test21AE = linkonce_odr unnamed_addr constant
+  struct A { };
+
+  // With -fhidden-weak-vtables, the typeinfo for A is marked hidden, but not its name.
+  // CHECK-TEST2-HIDDEN: _ZTSN5Test21AE = linkonce_odr constant
+  // CHECK-TEST2-HIDDEN: @_ZTIN5Test21AE = linkonce_odr hidden unnamed_addr constant
+  void f() {
+    (void)typeid(A);
+  }
+}