Android crash on startup - assertion "hostObjectProxy" failed' [React-Native v0.73.5 | New Architecture]

[axxag]

Hello, I have found that android refuses to start on react-native v0.73.5 / react-native-v8 v2.3.0 with newArchEnabled=true. Everything works just fine when newArchEnabled=false.

EDIT: Confirmed that the issue also exists on the newly released react-native v0.73.6.

I was able to track this down to an assertion in HostProxy.cpp:42 where it seems hostObjectProxy gets set to a nullptr when the new architecture is enabled. I will continue looking into this, but can anyone more familiar with this code assist? Here is a minimal repro: https://github.com/axxag/rn073-v8issue

And here is a snippet of the logcat:

--------- beginning of crash
03-11 06:53:06.361  2612  2612 F DEBUG   : *** *** *** *** *** *** *** *** ***
*** *** *** *** *** *** ***
03-11 06:53:06.362  2612  2612 F DEBUG   : Build fingerprint: 'Windows/windows_x86_64/windows_x86_64:13/TQ3A.230901.001/2311.40000.5.0:user/release-keys'
03-11 06:53:06.362  2612  2612 F DEBUG   : Revision: '0'
03-11 06:53:06.362  2612  2612 F DEBUG   : ABI: 'x86_64'
03-11 06:53:06.362  2612  2612 F DEBUG   : Timestamp: 2024-03-11 06:53:06.253810786-0700
03-11 06:53:06.362  2612  2612 F DEBUG   : Process uptime: 200s
03-11 06:53:06.362  2612  2612 F DEBUG   : Cmdline: com.rndiffapp
03-11 06:53:06.362  2612  2612 F DEBUG   : pid: 2259, tid: 2607, name: mqt_js
>>> com.rndiffapp <<<
03-11 06:53:06.362  2612  2612 F DEBUG   : uid: 10072
03-11 06:53:06.362  2612  2612 F DEBUG   : signal 6 (SIGABRT), code -1 (SI_QUEUE), fault addr --------
03-11 06:53:06.363  2612  2612 F DEBUG   : Abort message: '.../rn-diff-purge/RnDiffApp/node_modules/react-native-v8/src/v8runtime/HostProxy.cpp:42: static void rnv8::HostObjectProxy::Getter(v8::Local<v8::Name>, const v8::PropertyCallbackInfo<v8::Value> &): assertion "hostObjectProxy" failed'
03-11 06:53:06.363  2612  2612 F DEBUG   :     rax 0000000000000000  rbx 00000000000008d3  rcx 0000746d6bbc73bf  rdx 0000000000000006
03-11 06:53:06.363  2612  2612 F DEBUG   :     r8  000000000000002a  r9  000000000000002a  r10 0000746a415d6440  r11 0000000000000203
03-11 06:53:06.363  2612  2612 F DEBUG   :     r12 0000746a415d6af8  r13 0000746ccefa4120  r14 0000746a415d6438  r15 0000000000000a2f
03-11 06:53:06.363  2612  2612 F DEBUG   :     rdi 00000000000008d3  rsi 0000000000000a2f
03-11 06:53:06.363  2612  2612 F DEBUG   :     rbp 0000746a415d6a80  rsp 0000746a415d6430  rip 0000746d6bbc73bf
03-11 06:53:06.363  2612  2612 F DEBUG   : backtrace:
03-11 06:53:06.363  2612  2612 F DEBUG   :       #00 pc 000000000005f3bf  /apex/com.android.runtime/lib64/bionic/libc.so (abort+191) (BuildId: 76cb658c499bceaab85932d1254e26df)
03-11 06:53:06.363  2612  2612 F DEBUG   :       #01 pc 000000000005f82e  /apex/com.android.runtime/lib64/bionic/libc.so (__assert2+30) (BuildId: 76cb658c499bceaab85932d1254e26df)
03-11 06:53:06.364  2612  2612 F DEBUG   :       #02 pc 00000000000bc2c7  /data/app/~~HAiHMMA51WxAFDvqIIzP6A==/com.rndiffapp-hwfFeT8WLL7VmgBKd6uH7A==/lib/x86_64/libv8executor.so (rnv8::HostObjectProxy::Getter(v8::Local<v8::Name>, v8::PropertyCallbackInfo<v8::Value> const&)+1207) (BuildId: dedb282826b6573c088fa6c542749978119fe645)
03-11 06:53:06.364  2612  2612 F DEBUG   :       #03 pc 00000000009674b3  /data/app/~~HAiHMMA51WxAFDvqIIzP6A==/com.rndiffapp-hwfFeT8WLL7VmgBKd6uH7A==/lib/x86_64/libv8android.so (BuildId: 6454e6146fa02879)
03-11 06:53:06.364  2612  2612 F DEBUG   :       #04 pc 00000000009b2da5  /data/app/~~HAiHMMA51WxAFDvqIIzP6A==/com.rndiffapp-hwfFeT8WLL7VmgBKd6uH7A==/lib/x86_64/libv8android.so (v8::internal::Object::GetProperty(v8::internal::LookupIterator*, bool)+85) (BuildId: 6454e6146fa02879)
03-11 06:53:06.364  2612  2612 F DEBUG   :       #05 pc 00000000008644f2  /data/app/~~HAiHMMA51WxAFDvqIIzP6A==/com.rndiffapp-hwfFeT8WLL7VmgBKd6uH7A==/lib/x86_64/libv8android.so (BuildId: 6454e6146fa02879)
03-11 06:53:06.364  2612  2612 F DEBUG   :       #06 pc 000000000086c96c  /data/app/~~HAiHMMA51WxAFDvqIIzP6A==/com.rndiffapp-hwfFeT8WLL7VmgBKd6uH7A==/lib/x86_64/libv8android.so (BuildId: 6454e6146fa02879)
03-11 06:53:06.364  2612  2612 F DEBUG   :       #07 pc 000000000057e277  /data/app/~~HAiHMMA51WxAFDvqIIzP6A==/com.rndiffapp-hwfFeT8WLL7VmgBKd6uH7A==/lib/x86_64/libv8android.so (BuildId: 6454e6146fa02879)
--------- beginning of system
03-11 06:53:06.662   347   631 I ActivityManager: Process com.rndiffapp (pid 2259) has died: cch CRE