CC author of that commit.

Darin, do you have a full repro you can share? That would be useful for
debugging.


On Thu, Sep 12, 2019 at 4:36 PM Darin Dimitrov <darin.dimit...@gmail.com>
wrote:

> I am embedding v8 in my iOS application and calling some js function:
>
> Local<v8::Function> callback = ...
>
> std::vector<Local<Value>> v8Args = ...
>
> Local<Value> result;
>
> TryCatch tc(isolate);
>
> callback->Call(context, thiz, (*int*)v8Args.size(), v8Args.data()).ToLocal
> (&result));
>
>
> This code works pretty fine but starting from this commit
> https://chromium.googlesource.com/v8/v8.git/+/738d870db64a97db243e0d5856f92cc45e1c69fd
>  my code started failing consistently with the following error:
>
>
> * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
> (code=EXC_I386_GPFLT)
>
>   * frame #0: 0x00000001031f1fe0
> MyProj`v8::internal::PropertyCallbackArguments::CallNamedSetter(this=0x00007ffeedc03aa0,
> interceptor=<unavailable>, name=<unavailable>,
> value=Handle<v8::internal::Object> @ 0x00007ffeedc039e8) at
> api-arguments-inl.h:231:3 [opt]
>
>     frame #1: 0x000000010315e11d
> MyProj`v8::internal::__RT_impl_Runtime_StorePropertyWithInterceptor(args=Arguments
> @ 0x00007ffeedc03af0, isolate=0x000000011faf8000) at ic.cc:2760:37 [opt]
>
>     frame #2: 0x0000000103cd6f00
> MyProj`Builtins_CEntry_Return1_DontSaveFPRegs_ArgvOnStack_NoBuiltinExit + 64
>
>     frame #3: 0x0000000103ef0ccf MyProj`Builtins_StaNamedPropertyHandler
> + 1679
>
>     frame #4: 0x0000000103a0be52
> MyProj`Builtins_InterpreterEntryTrampoline + 946
>
>     frame #5: 0x00000001039fe57a MyProj`Builtins_JSEntryTrampoline + 90
>
>     frame #6: 0x00000001039fe57a MyProj`Builtins_JSEntryTrampoline + 90
>
>     frame #7: 0x00000001039fe358 MyProj`Builtins_JSEntry + 120
>
>     frame #8: 0x0000000103064512 MyProj`v8::internal::(anonymous
> namespace)::Invoke(v8::internal::Isolate*, v8::internal::(anonymous
> namespace)::InvokeParams const&) [inlined]
> v8::internal::GeneratedCode<unsigned long, unsigned long, unsigned long,
> unsigned long, unsigned long, long, unsigned
> long**>::Call(this=<unavailable>, args=<unavailable>, args=<unavailable>,
> args=<unavailable>, args=<unavailable>, args=<unavailable>,
> args=<unavailable>) at simulator.h:138:12 [opt]
>
>     frame #9: 0x0000000103064509 MyProj`v8::internal::(anonymous
> namespace)::Invoke(isolate=0x000000011faf8000,
> params=<unavailable>)::InvokeParams const&) at execution.cc:266 [opt]
>
>     frame #10: 0x0000000103063e27
> MyProj`v8::internal::Execution::Call(isolate=0x000000011faf8000,
> callable=<unavailable>, receiver=<unavailable>, argc=1,
> argv=0x0000600001a8cee0) at execution.cc:358:10 [opt]
>
>     frame #11: 0x0000000102d3a80d
> MyProj`v8::Function::Call(this=0x00007fdeee81b840, context=<unavailable>,
> recv=<unavailable>, argc=1, argv=0x0000600001a8cee0) at api.cc:4840:7 [opt]
>
>
>
> And this is the crashing code:
> https://chromium.googlesource.com/v8/v8.git/+/738d870db64a97db243e0d5856f92cc45e1c69fd/src/api/api-arguments-inl.h#231
>
>
> The crash is observed after multiple calls to this method and after some
> GC iterations.
>
> --
>

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