crash with null pointer dereference react-native v0.66.5

[gmaclennan]

Updating from react-native v0.66.4 --> 0.66.5 results in a runtime v8 crash in our app, with react-native-v8@0.66.4-patch.0.

As a solution I have tried updating react-native-v8 to v1.5.2 (we were using react-native@0.66.4-patch.0) but v1.5.2 does not seem to be working, reported in #149.

Unfortunately a bare bones app with the same react-native and react-native-v8 versions does not crash. However I can share the app code that is resulting in this crash: digidem/mapeo-mobile#1040 — this was working before with react-native@0.66.4, however we are no longer able to test that or revert to it because Facebook broke all react-native builds

Error log (from adb log "*:E"):

11-07 13:14:19.023 17803 17862 F libc    : Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x109 in tid 17862 (mqt_js), pid 17803 (com.mapeo.debug)
11-07 13:14:19.063 17872 17872 E crash_dump32: failed to interrupt 17873 to detach: No such process
11-07 13:14:19.080 17872 17872 F DEBUG   : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
11-07 13:14:19.080 17872 17872 F DEBUG   : Build fingerprint: 'Android/sdk_phone_x86/generic_x86:9/PSR1.180720.012/4923214:userdebug/test-keys'
11-07 13:14:19.080 17872 17872 F DEBUG   : Revision: '0'
11-07 13:14:19.080 17872 17872 F DEBUG   : ABI: 'x86'
11-07 13:14:19.080 17872 17872 F DEBUG   : pid: 17803, tid: 17862, name: mqt_js  >>> com.mapeo.debug <<<
11-07 13:14:19.080 17872 17872 F DEBUG   : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x109
11-07 13:14:19.080 17872 17872 F DEBUG   : Cause: null pointer dereference
11-07 13:14:19.080 17872 17872 F DEBUG   :     eax 00000104  ebx c787c788  ecx 0000003e  edx 47fc5481
11-07 13:14:19.080 17872 17872 F DEBUG   :     edi c787c838  esi c22d0ea0
11-07 13:14:19.080 17872 17872 F DEBUG   :     ebp c787c778  esp c787c730  eip c880101e
11-07 13:14:19.084 17872 17872 F DEBUG   :
11-07 13:14:19.084 17872 17872 F DEBUG   : backtrace:
11-07 13:14:19.084 17872 17872 F DEBUG   :     #00 pc 00ef501e  /data/app/com.mapeo.debug-ZGCcIhvtNt9b-qjZhWkcog==/lib/x86/libv8android.so (v8::internal::LookupIterator::State v8::internal::LookupIterator::LookupInRegularHolder<false>(v8::internal::Map, v8::internal::JSReceiver)+446)
11-07 13:14:19.084 17872 17872 F DEBUG   :     #01 pc 00ef295f  /data/app/com.mapeo.debug-ZGCcIhvtNt9b-qjZhWkcog==/lib/x86/libv8android.so (v8::internal::LookupIterator::State v8::internal::LookupIterator::LookupInSpecialHolder<false>(v8::internal::Map, v8::internal::JSReceiver)+351)
11-07 13:14:19.084 17872 17872 F DEBUG   :     #02 pc 00ef210e  /data/app/com.mapeo.debug-ZGCcIhvtNt9b-qjZhWkcog==/lib/x86/libv8android.so (void v8::internal::LookupIterator::Start<false>()+142)
11-07 13:14:19.084 17872 17872 F DEBUG   :     #03 pc 01033d96  /data/app/com.mapeo.debug-ZGCcIhvtNt9b-qjZhWkcog==/lib/x86/libv8android.so (v8::internal::Runtime::GetObjectProperty(v8::internal::Isolate*, v8::internal::Handle<v8::internal::Object>, v8::internal::Handle<v8::internal::Object>, v8::internal::Handle<v8::internal::Object>, bool*)+470)
11-07 13:14:19.084 17872 17872 F DEBUG   :     #04 pc 0103a595  /data/app/com.mapeo.debug-ZGCcIhvtNt9b-qjZhWkcog==/lib/x86/libv8android.so
11-07 13:14:19.084 17872 17872 F DEBUG   :     #05 pc 00acd8f6  /data/app/com.mapeo.debug-ZGCcIhvtNt9b-qjZhWkcog==/lib/x86/libv8android.so

[Kudo]

hi, it's worth to try react-native-v8@1.6.0 which resolved #149.