I did that, and it threw an exception trying to construct a ScriptState 
from an empty V8 context, which was less then helpful. Do you know where in 
the process V8 and/or Blink layout tests decide "something went wrong, I'm 
going to just return you an empty context and you can take it from there"?

On Wednesday, July 1, 2015 at 5:35:58 PM UTC+9, Jochen Eisinger wrote:
>
> Currently, the only thing you can do is to attach a debugger, and see what 
> the exception is that gets thrown.
>
> best
> -jochen
>
> On Tue, Jun 30, 2015 at 3:54 PM Domenic Denicola <[email protected] 
> <javascript:>> wrote:
>
>> While messing around with V8 extras, I managed to introduce some 
>> malformed syntax or misused API, which caused V8 context creation to fail 
>> during layout test startup. This manifests in 
>> WebCoreTestSupport::injectInternalsObject being passed an empty 
>> v8::Local<v8::Context>, and a subsequent crash.
>>
>> I was wondering if there were some log file or something I could look in, 
>> where V8 would tell me why it failed to create a context? I only was able 
>> to figure out that this was due to my JS work due to some pretty extensive 
>> bisecting. And now I'm in for a fun time commenting out plausible-looking 
>> lines in my V8 extra .js file to find which ones are triggering the crash. 
>> If there were some way to get V8 to say "I failed while compiling this 
>> extra, on line X, because you tried to do bad thing Y," I'd be a very happy 
>> developer.
>>
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