Commit testcase

From-SVN: r86869

gcc/testsuite/g++.dg/ext/visibility/arm1.C

+// { dg-do compile { target arm*-*-eabi* arm*-*-symbianelf* } }
+// { dg-options "-fvisibility=hidden" }
+// Most class data should be exported.
+// { dg-final { scan-not-hidden "_ZTV1S" } }
+// { dg-final { scan-not-hidden "_ZTI1S" } }
+// { dg-final { scan-not-hidden "_ZTS1S" } }
+// { dg-final { scan-not-hidden "_ZTV1U" } }
+// { dg-final { scan-not-hidden "_ZTT1U" } }
+// { dg-final { scan-not-hidden "_ZTI1U" } }
+// { dg-final { scan-not-hidden "_ZTS1U" } }
+// The construction vtable should be hidden.
+// { dg-final { scan-hidden "_ZTC1U0_1T" } }
+
+struct S {
+  virtual void f();
+};
+
+void S::f() {
+}
+
+struct T : public virtual S {
+  virtual void g();
+};
+
+struct U : public virtual T {
+  virtual void h();
+};
+
+void U::h() {}