[BUG] std::runtime_error isn't passed to Python?

[yurivict]

When C++ code throws a std::runtime_error exception python catches it as RuntimeError that prints as Caught an unknown exception!

The documentation says that a variety of STL exceptions is caught and converted to Python exceptions, but std::runtime_error isn't listed there.

I have 2 questions:
(1) Why isn't std::runtime_error listed as a handled exception type?
(2) Why isn't std::runtime_error processed as an instance of std::exception properly?

[Skylion007]

@yurivict Do you have a minimal example? We can't replicate this and we even have testing to ensure the proper string is passed to Python when it is thrown:

pybind11/tests/test_exceptions.py

Line 10 in fcb5554

def test_std_exception(msg):

[youben11]

I'm observing this on MacOS 12 on an M1 chip. Tried with both std::runtime_error and std::invalid_argument, they both got caught as RuntimeError: Caught an unknown exception! on the python side.

[GenieTim]

A year ago, I did not have this problem, but I am also observing it now on my Intel-based MacOS system.