setjmp support
calvin2021y opened this issue · 4 comments
current sdk ./share/wasi-sysroot/include/c++/v1/setjmp.h is not working.
please share the roadmap for this sdk to support setjmp, I want use it in https://github.com/protocolbuffers/upb
The current plan is to wait for the exception-handling proposal to be standardized and implemented in wasm engines, and then to implement setjmp and longjmp using that feature. Exception-handling is currently in phase 3.
Another option would be to define a host API which performs stack unwinding. We've so far not pursued this approach, because that would be a lot of complex work for non-JS host API implementors, for what would ultimately be a temporary workaround. And, such an API would not be virtualizable, and would raise complex questions about non-C-language unwinding which the exception-handling proposal already has answers for.
The original question is answered; please file new issues for any further questions!