Fairly sure this is just crbug.com/v8/8669 The reason is that there is already a console object in the snapshot, and the one you set up on the global object via object template will get overwritten. We used to assert in order to avoid mistakes by embedders.
You need to cherry-pick c8567109f5536c697aea1166919e2bac23685fbd and da2047c4a276a4d0077d00630a391917a7a1fff1, or upgrade past V8 version 7.3.400 The actual way to implement the console object though is to implement an inspector frontend and communicate with V8 inspector via DevTools protocol. Cheers, Yang On Tue, Feb 5, 2019 at 3:30 PM Jeroen Ooms <[email protected]> wrote: > The V8 bindings for R create a context and then set the 'console' property > to implement console.log() and console.warn() > > v8::Local<v8::ObjectTemplate> console = > v8::ObjectTemplate::New(isolate); > global->Set(String::NewFromUtf8(isolate, "console"), console); > console->Set(String::NewFromUtf8(isolate, "log"), > v8::FunctionTemplate::New(isolate, ConsoleLog)); > ... > Persistent<Context> context = Context::New(isolate, NULL, global); > > This works on all systems except on Fedora (v8 6.7.17) it crashes when > initiating the context: > > # Fatal error in ../../src/objects.cc, line 5983 > # Debug check failed: !it.IsFound(). > > After some trial and error I discovered that it does not crash if I change > the name of the property something else than "console". Hence I suppose > this name is somehow reserved on this version of V8? Is there a some way to > override this, or alternatively test if 'global.console' has been reserved > so I should not attempt to set it? > > > -- > -- > v8-dev mailing list > [email protected] > http://groups.google.com/group/v8-dev > --- > You received this message because you are subscribed to the Google Groups > "v8-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- -- v8-dev mailing list [email protected] http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
