I apologize for my previous hasty conclusion. I have conducted further testing on different platforms and would like to share my findings.
> FreeBSD Based on my tests, it appears that FreeBSD follows the Itanium C++ ABI specification. The previous test failed because the C++ compiler was not used when linking libpgsjlj.so. > macOS, M1 My tests show that macOS M1 roughly follows the Itanium C++ ABI specification, with only slight differences, such as the parameters accepted by the _Unwind_Stop_Fn function. > macOS, x86 I don't have the resources to do the testing, but from a code perspective, it appears that macOS x86 follows the Itanium C++ ABI specification. > Windows It seems that Windows does not follow the Itanium C++ ABI specification at all. If we compile the program using the `/EHsc` option, longjmp will also trigger forced unwinding. However, unlike the Itanium C++ ABI, the forced unwinding triggered here cannot be captured by a C++ catch statement.
