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Merge branch 'master' into sh_merge_master

This commit is contained in:
Ralf W. Grosse-Kunstleve 2024-09-02 10:16:03 -07:00
parent bd8985aa0f aeda49ed0b
commit e5f57c473c
7 changed files with 108 additions and 54 deletions
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1
CMakeLists.txt
View File

@ -138,6 +138,7 @@ set(PYBIND11_HEADERS
include/pybind11/detail/typeid.h
include/pybind11/detail/using_smart_holder.h
include/pybind11/detail/value_and_holder.h
include/pybind11/detail/exception_translation.h
include/pybind11/attr.h
include/pybind11/buffer_info.h
include/pybind11/cast.h

15
include/pybind11/detail/class.h
View File

@ -12,6 +12,8 @@
#include <pybind11/attr.h>
#include <pybind11/options.h>
#include "exception_translation.h"
PYBIND11_NAMESPACE_BEGIN(PYBIND11_NAMESPACE)
PYBIND11_NAMESPACE_BEGIN(detail)
@ -583,7 +585,18 @@ extern "C" inline int pybind11_getbuffer(PyObject *obj, Py_buffer *view, int fla
return -1;
}
std::memset(view, 0, sizeof(Py_buffer));
buffer_info *info = tinfo->get_buffer(obj, tinfo->get_buffer_data);
buffer_info *info = nullptr;
try {
info = tinfo->get_buffer(obj, tinfo->get_buffer_data);
} catch (...) {
try_translate_exceptions();
raise_from(PyExc_BufferError, "Error getting buffer");
return -1;
}
if (info == nullptr) {
pybind11_fail("FATAL UNEXPECTED SITUATION: tinfo->get_buffer() returned nullptr.");
}
if ((flags & PyBUF_WRITABLE) == PyBUF_WRITABLE && info->readonly) {
delete info;
// view->obj = nullptr; // Was just memset to 0, so not necessary

71
include/pybind11/detail/exception_translation.h Normal file
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@ -0,0 +1,71 @@
/*
pybind11/detail/exception_translation.h: means to translate C++ exceptions to Python exceptions
Copyright (c) 2024 The Pybind Development Team.
All rights reserved. Use of this source code is governed by a
BSD-style license that can be found in the LICENSE file.
*/
#pragma once
#include "common.h"
#include "internals.h"
PYBIND11_NAMESPACE_BEGIN(PYBIND11_NAMESPACE)
PYBIND11_NAMESPACE_BEGIN(detail)
// Apply all the extensions translators from a list
// Return true if one of the translators completed without raising an exception
// itself. Return of false indicates that if there are other translators
// available, they should be tried.
inline bool apply_exception_translators(std::forward_list<ExceptionTranslator> &translators) {
auto last_exception = std::current_exception();
for (auto &translator : translators) {
try {
translator(last_exception);
return true;
} catch (...) {
last_exception = std::current_exception();
}
}
return false;
}
inline void try_translate_exceptions() {
/* When an exception is caught, give each registered exception
translator a chance to translate it to a Python exception. First
all module-local translators will be tried in reverse order of
registration. If none of the module-locale translators handle
the exception (or there are no module-locale translators) then
the global translators will be tried, also in reverse order of
registration.
A translator may choose to do one of the following:
- catch the exception and call py::set_error()
to set a standard (or custom) Python exception, or
- do nothing and let the exception fall through to the next translator, or
- delegate translation to the next translator by throwing a new type of exception.
*/
bool handled = with_internals([&](internals &internals) {
auto &local_exception_translators = get_local_internals().registered_exception_translators;
if (detail::apply_exception_translators(local_exception_translators)) {
return true;
}
auto &exception_translators = internals.registered_exception_translators;
if (detail::apply_exception_translators(exception_translators)) {
return true;
}
return false;
});
if (!handled) {
set_error(PyExc_SystemError, "Exception escaped from default exception translator!");
}
}
PYBIND11_NAMESPACE_END(detail)
PYBIND11_NAMESPACE_END(PYBIND11_NAMESPACE)

55
include/pybind11/pybind11.h
View File

@ -9,9 +9,9 @@
*/
#pragma once
#include "detail/class.h"
#include "detail/dynamic_raw_ptr_cast_if_possible.h"
#include "detail/exception_translation.h"
#include "detail/init.h"
#include "detail/using_smart_holder.h"
#include "attr.h"
@ -97,24 +97,6 @@ inline std::string replace_newlines_and_squash(const char *text) {
return result.substr(str_begin, str_range);
}
// Apply all the extensions translators from a list
// Return true if one of the translators completed without raising an exception
// itself. Return of false indicates that if there are other translators
// available, they should be tried.
inline bool apply_exception_translators(std::forward_list<ExceptionTranslator> &translators) {
auto last_exception = std::current_exception();
for (auto &translator : translators) {
try {
translator(last_exception);
return true;
} catch (...) {
last_exception = std::current_exception();
}
}
return false;
}
#if defined(_MSC_VER)
# define PYBIND11_COMPAT_STRDUP _strdup
#else
@ -1040,40 +1022,7 @@ protected:
throw;
#endif
} catch (...) {
/* When an exception is caught, give each registered exception
translator a chance to translate it to a Python exception. First
all module-local translators will be tried in reverse order of
registration. If none of the module-locale translators handle
the exception (or there are no module-locale translators) then
the global translators will be tried, also in reverse order of
registration.
A translator may choose to do one of the following:
- catch the exception and call py::set_error()
to set a standard (or custom) Python exception, or
- do nothing and let the exception fall through to the next translator, or
- delegate translation to the next translator by throwing a new type of exception.
*/
bool handled = with_internals([&](internals &internals) {
auto &local_exception_translators
= get_local_internals().registered_exception_translators;
if (detail::apply_exception_translators(local_exception_translators)) {
return true;
}
auto &exception_translators = internals.registered_exception_translators;
if (detail::apply_exception_translators(exception_translators)) {
return true;
}
return false;
});
if (handled) {
return nullptr;
}
set_error(PyExc_SystemError, "Exception escaped from default exception translator!");
try_translate_exceptions();
return nullptr;
}

1
tests/extra_python_package/test_files.py
View File

@ -64,6 +64,7 @@ detail_headers = {
"include/pybind11/detail/typeid.h",
"include/pybind11/detail/using_smart_holder.h",
"include/pybind11/detail/value_and_holder.h",
"include/pybind11/detail/exception_translation.h",
}
eigen_headers = {

12
tests/test_buffers.cpp
View File

@ -167,6 +167,18 @@ TEST_SUBMODULE(buffers, m) {
sizeof(float)});
});
class BrokenMatrix : public Matrix {
public:
BrokenMatrix(py::ssize_t rows, py::ssize_t cols) : Matrix(rows, cols) {}
void throw_runtime_error() { throw std::runtime_error("See PR #5324 for context."); }
};
py::class_<BrokenMatrix>(m, "BrokenMatrix", py::buffer_protocol())
.def(py::init<py::ssize_t, py::ssize_t>())
.def_buffer([](BrokenMatrix &m) {
m.throw_runtime_error();
return py::buffer_info();
});
// test_inherited_protocol
class SquareMatrix : public Matrix {
public:

7
tests/test_buffers.py
View File

@ -228,3 +228,10 @@ def test_buffer_docstring():
m.get_buffer_info.__doc__.strip()
== "get_buffer_info(arg0: Buffer) -> pybind11_tests.buffers.buffer_info"
)
def test_buffer_exception():
with pytest.raises(BufferError, match="Error getting buffer") as excinfo:
memoryview(m.BrokenMatrix(1, 1))
assert isinstance(excinfo.value.__cause__, RuntimeError)
assert "for context" in str(excinfo.value.__cause__)