mirror of
https://github.com/pybind/pybind11.git
synced 2026-07-14 19:17:12 +00:00
a4816471e1
```
/__w/pybind11/pybind11/tests/test_class_sh_trampoline_weak_ptr.cpp:23:43: error: the parameter 'sp' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param,-warnings-as-errors]
23 | void set_wp(std::shared_ptr<VirtBase> sp) { wp = sp; }
| ^
| const &
4443 warnings generated.
```
```
/__w/pybind11/pybind11/tests/test_class_sp_trampoline_weak_ptr.cpp:23:43: error: the parameter 'sp' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param,-warnings-as-errors]
23 | void set_wp(std::shared_ptr<VirtBase> sp) { wp = sp; }
| ^
| const &
4430 warnings generated.
```
52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
// Copyright (c) 2025 The Pybind Development Team.
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// All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "pybind11_tests.h"
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#include <memory>
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namespace pybind11_tests {
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namespace class_sp_trampoline_weak_ptr {
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struct VirtBase {
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virtual ~VirtBase() = default;
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virtual int get_code() { return 100; }
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};
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struct PyVirtBase : VirtBase, py::trampoline_self_life_support {
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using VirtBase::VirtBase;
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int get_code() override { PYBIND11_OVERRIDE(int, VirtBase, get_code); }
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};
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struct WpOwner {
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void set_wp(const std::shared_ptr<VirtBase> &sp) { wp = sp; }
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int get_code() {
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auto sp = wp.lock();
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if (!sp) {
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return -999;
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}
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return sp->get_code();
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}
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private:
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std::weak_ptr<VirtBase> wp;
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};
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} // namespace class_sp_trampoline_weak_ptr
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} // namespace pybind11_tests
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using namespace pybind11_tests::class_sp_trampoline_weak_ptr;
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TEST_SUBMODULE(class_sp_trampoline_weak_ptr, m) {
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py::class_<VirtBase, std::shared_ptr<VirtBase>, PyVirtBase>(m, "VirtBase")
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.def(py::init<>())
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.def("get_code", &VirtBase::get_code);
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py::class_<WpOwner>(m, "WpOwner")
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.def(py::init<>())
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.def("set_wp", &WpOwner::set_wp)
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.def("get_code", &WpOwner::get_code);
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}
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