[BUG]: Can't catch the exception in Python that raise in C++ using py::error_already_set()

[QunBB]

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What version (or hash if on master) of pybind11 are you using?

2.10.0

Problem description

When i use the below reproducible example code, I can't catch the exception IndexError in Python that raise in C++.
The log is:

before exception

Process finished with exit code 139 (interrupted by signal 11:SIGSEGV)

Reproducible example code

m.def("test_exception", []() { 
 std::cout << "before exception" << std::endl;

 PyErr_SetString(PyExc_IndexError, "Here is an IndexError");
 throw py::error_already_set();
 
 std::cout << "after exception" << std::endl;
 });

test_exception()

Is this a regression? Put the last known working version here if it is.

Not a regression

[henryiii]

🤖 AI text below 🤖

The reported snippet was compiled against current master, and the IndexError is now caught correctly in Python. The report used 2.10.0; #4298 fixed the cross-DSO exception visibility problem, and that fix is in v2.10.1 and later.

If you can still reproduce this with current master (v3), please comment and we can reopen.