1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/ext/visibility/warn3.C b/gcc/testsuite/g++.dg/ext/visibility/warn3.C
new file mode 100644
index 000000000..d1d3ba486
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/visibility/warn3.C
@@ -0,0 +1,26 @@
+// Tests for various visibility mismatch situations.
+
+// { dg-require-visibility "" }
+
+// { dg-final { scan-not-hidden "_ZN1A1fEv" } }
+
+struct __attribute ((visibility ("hidden"))) A
+{
+  // This is OK, A::f gets default visibility.
+  __attribute ((visibility ("default"))) void f ();
+};
+
+void A::f() { }
+
+// This gets a warning because B objects might rely
+// on hidden symbols from A.
+struct B			// { dg-warning "visibility" }
+{
+  A a;
+};
+
+// This one has explicit visibility, so it doesn't get a warning.
+struct __attribute ((visibility ("default"))) C
+{
+  A a;
+};