Add more PYBIND11_NS_VISIBILITY to resolve CUDA and mingw warnings.

Author: rwgk

tests/pybind11_cross_module_tests.cpp

@@ -48,7 +48,7 @@ PYBIND11_MODULE(pybind11_cross_module_tests, m) {
             if (p) {
                 std::rethrow_exception(p);
             }
-        } catch (const shared_exception &e) {
+        } catch (const pybind11_tests::shared_exception &e) {
             PyErr_SetString(PyExc_KeyError, e.what());
         }
     });

tests/test_custom_type_setup.cpp

@@ -13,14 +13,19 @@
 
 namespace py = pybind11;
 
+PYBIND11_NAMESPACE_BEGIN(PYBIND11_NS_VISIBILITY(pybind11_tests))
 namespace {
 
 struct OwnsPythonObjects {
     py::object value = py::none();
 };
+
 } // namespace
+PYBIND11_NAMESPACE_END(pybind11_tests)
 
 TEST_SUBMODULE(custom_type_setup, m) {
+    using namespace pybind11_tests;
+
     py::class_<OwnsPythonObjects> cls(
         m, "OwnsPythonObjects", py::custom_type_setup([](PyHeapTypeObject *heap_type) {
             auto *type = &heap_type->ht_type;

tests/test_exceptions.h

@@ -5,9 +5,13 @@
 
 // shared exceptions for cross_module_tests
 
+PYBIND11_NAMESPACE_BEGIN(PYBIND11_NS_VISIBILITY(pybind11_tests))
+
 class PYBIND11_EXPORT_EXCEPTION shared_exception : public pybind11::builtin_exception {
 public:
     using builtin_exception::builtin_exception;
     explicit shared_exception() : shared_exception("") {}
     void set_error() const override { PyErr_SetString(PyExc_RuntimeError, what()); }
 };
+
+PYBIND11_NAMESPACE_END(pybind11_tests)