The Itanium C++ ABI mentions something similar > A two-phase exception-handling model is not strictly necessary to implement C++ language semantics, but it doe

The Itanium C++ ABI mentions something similar > A two-phase exception-handling model is not strictly necessary to implement C++ language semantics, but it does provide some benefits. For example, the first phase allows an exception-handling mechanism to dismiss an exception before stack unwinding begins, which allows resumptive exception handling (correcting the exceptional condition and resuming execution at the point where it was raised). While C++ does not support resumptive exception handling, other languages do, and the two-phase model allows C++ to coexist with those languages on the stack. http://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html http://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html