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Report "FATAL failure building pybind11::error_already_set error_string" and terminate process.

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This commit is contained in:
Ralf W. Grosse-Kunstleve 2022-05-05 14:20:30 -07:00
parent 226cddea49
commit f4a440a8f9
1 changed files with 41 additions and 8 deletions
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49
include/pybind11/pytypes.h
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@ -13,6 +13,7 @@
#include "buffer_info.h"
#include <exception>
#include <iostream>
#include <string>
#include <type_traits>
#include <utility>
@ -366,6 +367,13 @@ std::string error_string();
std::string error_string(PyObject *, PyObject *, PyObject *);
PYBIND11_NAMESPACE_END(detail)
inline const char *class_name(PyObject *py) {
if (Py_TYPE(py) == &PyType_Type) {
return reinterpret_cast<PyTypeObject *>(py)->tp_name;
}
return Py_TYPE(py)->tp_name;
}
#if defined(_MSC_VER)
# pragma warning(push)
# pragma warning(disable : 4275 4251)
@ -396,15 +404,40 @@ public:
if (m_lazy_what.empty()) {
try {
m_lazy_what = detail::error_string(m_type.ptr(), m_value.ptr(), m_trace.ptr());
} catch (const std::exception &e) {
m_lazy_what
= std::string(
"Unknown internal error occurred while constructing error_string: ")
+ e.what();
return m_lazy_what.c_str();
// Uncomment to test the catch (...) block:
// throw std::runtime_error("Something went wrong.");
} catch (...) {
m_lazy_what = "Unknown internal error occurred";
return m_lazy_what.c_str();
// Terminating the process, to not mask the original error by errors in the error
// handling. Reporting the original error on stderr. Intentionally using the Python
// C API directly, to maximize reliability.
std::string msg
= "FATAL failure building pybind11::error_already_set error_string: ";
if (m_type.ptr() == nullptr) {
msg += "PYTHON_EXCEPTION_TYPE_IS_NULLPTR";
} else {
const char *tp_name = class_name(m_type.ptr());
if (tp_name == nullptr) {
msg += "PYTHON_EXCEPTION_TP_NAME_IS_NULLPTR";
} else {
msg += tp_name;
}
}
msg += ": ";
PyObject *val_str = PyObject_Str(m_value.ptr());
if (val_str == nullptr) {
msg += "PYTHON_EXCEPTION_VALUE_IS_NULLPTR";
} else {
Py_ssize_t utf8_str_size = 0;
const char *utf8_str = PyUnicode_AsUTF8AndSize(val_str, &utf8_str_size);
if (utf8_str == nullptr) {
msg += "PYTHON_EXCEPTION_VALUE_AS_UTF8_FAILURE";
} else {
msg += '"' + std::string(utf8_str, static_cast<std::size_t>(utf8_str_size))
+ '"';
}
}
std::cerr << msg << std::endl;
std::terminate();
}
}
assert(!m_lazy_what.empty());