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[smart_holder] Make smart holder type caster of unique_ptr accept automatic_reference (#4775)

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* Also accept automatic_reference

* Add a test case

* Remove the test case

* Add another test case

* Fix test case
This commit is contained in:
Xiaofei Wang 2023-08-03 18:33:16 -07:00 committed by GitHub
parent b6444460ee
commit f1e2e55bda
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3 changed files with 11 additions and 0 deletions
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1
include/pybind11/detail/smart_holder_type_casters.h
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@ -965,6 +965,7 @@ struct smart_holder_type_caster<std::unique_ptr<T, D>> : smart_holder_type_caste
static handle cast(std::unique_ptr<T, D> &&src, return_value_policy policy, handle parent) {
if (policy != return_value_policy::automatic
&& policy != return_value_policy::automatic_reference
&& policy != return_value_policy::reference_internal
&& policy != return_value_policy::move
&& policy != return_value_policy::_clif_automatic) {

6
tests/test_class_sh_basic.cpp
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@ -160,6 +160,12 @@ TEST_SUBMODULE(class_sh_basic, m) {
m.def("args_shared_ptr_const", [](std::shared_ptr<atyp const> p) { return p; });
m.def("args_unique_ptr", [](std::unique_ptr<atyp> p) { return p; });
m.def("args_unique_ptr_const", [](std::unique_ptr<atyp const> p) { return p; });
// Make sure unique_ptr type caster accept automatic_reference return value policy.
m.def(
"rtrn_uq_automatic_reference",
[]() { return std::unique_ptr<atyp>(new atyp("rtrn_uq_automatic_reference")); },
pybind11::return_value_policy::automatic_reference);
}
} // namespace class_sh_basic

4
tests/test_class_sh_basic.py
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@ -181,3 +181,7 @@ def test_function_signatures(doc):
doc(m.args_unique_ptr_const)
== "args_unique_ptr_const(arg0: m.class_sh_basic.atyp) -> m.class_sh_basic.atyp"
)
def test_unique_ptr_return_value_policy_automatic_reference():
assert m.get_mtxt(m.rtrn_uq_automatic_reference()) == "rtrn_uq_automatic_reference"