Re: [v8-users] What happens when you throw a C++ exception from a FunctionTemplate callback function?
All of V8 is compiled with -fno-exceptions, so it doesn't support C++ exceptions. You could try building without that flag, but then you'd be entirely on your own you find that something doesn't work (and I'm pretty sure that something wouldn't work -- V8 code is not written to be exception safe). The exception system that V8 implements for JavaScript code (via Isolate::ThrowException, v8::TryCatch, etc) is completely unrelated to C++ exceptions. On Thu, Feb 4, 2016 at 8:10 AM, Zac Hansen wrote: > Here is a full, stand-alone reproduction case and stack trace for my > problem: https://gist.github.com/xaxxon/d45ba2bd11675735b4fa > > When I throw a normal c++ exception from a FunctionTemplate callback > function, my process immediately goes into pthread_kill. > > It feels a lot like something down the stack is marked noexcept, but I > don't know what - or if it is even frames 13-16 in my stack trace in the > above link which I'm guessing are v8-generated calls. Nothing in the > include/ or src/ directories seems to be marked noexcept, but there are a > very large number of things in third_party with "noexcept". > > In the process of working through this I learned about > Isolate::ThrowException and that seems to work for what I need, but I'm > wondering if this is intended behavior (maybe even documented somewhere?) > or if I've hit some edge case. > > Thank you. > > --Zac > > -- > -- > v8-users mailing list > v8-users@googlegroups.com > http://groups.google.com/group/v8-users > --- > You received this message because you are subscribed to the Google Groups > "v8-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- -- v8-users mailing list v8-users@googlegroups.com http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [v8-users] What happens when you throw a C++ exception from a FunctionTemplate callback function?
Good to know, thank you. On Thursday, February 4, 2016 at 12:45:20 AM UTC-8, Jakob Kummerow wrote: > > All of V8 is compiled with -fno-exceptions, so it doesn't support C++ > exceptions. You could try building without that flag, but then you'd be > entirely on your own you find that something doesn't work (and I'm pretty > sure that something wouldn't work -- V8 code is not written to be exception > safe). > > The exception system that V8 implements for JavaScript code (via > Isolate::ThrowException, v8::TryCatch, etc) is completely unrelated to C++ > exceptions. > > On Thu, Feb 4, 2016 at 8:10 AM, Zac Hansen > > wrote: > >> Here is a full, stand-alone reproduction case and stack trace for my >> problem: https://gist.github.com/xaxxon/d45ba2bd11675735b4fa >> >> When I throw a normal c++ exception from a FunctionTemplate callback >> function, my process immediately goes into pthread_kill. >> >> It feels a lot like something down the stack is marked noexcept, but I >> don't know what - or if it is even frames 13-16 in my stack trace in the >> above link which I'm guessing are v8-generated calls. Nothing in the >> include/ or src/ directories seems to be marked noexcept, but there are a >> very large number of things in third_party with "noexcept". >> >> In the process of working through this I learned about >> Isolate::ThrowException and that seems to work for what I need, but I'm >> wondering if this is intended behavior (maybe even documented somewhere?) >> or if I've hit some edge case. >> >> Thank you. >> >> --Zac >> >> -- >> -- >> v8-users mailing list >> v8-u...@googlegroups.com >> http://groups.google.com/group/v8-users >> --- >> You received this message because you are subscribed to the Google Groups >> "v8-users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to v8-users+u...@googlegroups.com . >> For more options, visit https://groups.google.com/d/optout. >> > > -- -- v8-users mailing list v8-users@googlegroups.com http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
