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/*
Copyright (c) 2022 Google LLC
All rights reserved. Use of this source code is governed by a
BSD-style license that can be found in the LICENSE file.
*/
#include <pybind11/pybind11.h>
// This file mimics a DSO that makes pybind11 calls but does not define a PYBIND11_MODULE,
// so that the first call of cross_module_error_already_set() triggers the first call of
// pybind11::detail::get_internals().
namespace {
namespace py = pybind11;
void interleaved_error_already_set() {
PyErr_SetString(PyExc_RuntimeError, "1st error.");
try {
throw py::error_already_set();
} catch (const py::error_already_set &) {
// The 2nd error could be conditional in a real application.
PyErr_SetString(PyExc_RuntimeError, "2nd error.");
} // Here the 1st error is destroyed before the 2nd error is fetched.
// The error_already_set dtor triggers a pybind11::detail::get_internals()
// call via pybind11::gil_scoped_acquire.
if (PyErr_Occurred()) {
throw py::error_already_set();
}
}
constexpr char kModuleName[] = "cross_module_interleaved_error_already_set";
struct PyModuleDef moduledef = {
PyModuleDef_HEAD_INIT, kModuleName, nullptr, 0, nullptr, nullptr, nullptr, nullptr, nullptr};
} // namespace
extern "C" PYBIND11_EXPORT PyObject *PyInit_cross_module_interleaved_error_already_set() {
PyObject *m = PyModule_Create(&moduledef);
if (m != nullptr) {
static_assert(sizeof(&interleaved_error_already_set) == sizeof(void *),
"Function pointer must have the same size as void *");
PyModule_AddObject(
m,
"funcaddr",
PyLong_FromVoidPtr(reinterpret_cast<void *>(&interleaved_error_already_set)));
}
return m;
}
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