Open WilliamParks opened 3 years ago
gradle clean
Hermes version: 7d4cb023f9cfc87d2b0e8144ccad3bd329269af8 React Native version (if any): Android version (if any): Platform (most likely one of arm64-v8a, armeabi-v7a, x86, x86_64):
The provided code produces the following assertion failure in Hermes. I do not believe this is security issue.
Assertion: hermes: ../lib/VM/JSObject.cpp:1378: static CallResult<bool> hermes::vm::JSObject::putNamedWithReceiver_RJS(Handle<hermes::vm::JSObject>, hermes::vm::Runtime *, hermes::vm::SymbolID, Handle<>, Handle<>, hermes::vm::PropOpFlags): Assertion `!opFlags.getMustExist() && "MustExist cannot be used with Proxy objects"' failed.
hermes: ../lib/VM/JSObject.cpp:1378: static CallResult<bool> hermes::vm::JSObject::putNamedWithReceiver_RJS(Handle<hermes::vm::JSObject>, hermes::vm::Runtime *, hermes::vm::SymbolID, Handle<>, Handle<>, hermes::vm::PropOpFlags): Assertion `!opFlags.getMustExist() && "MustExist cannot be used with Proxy objects"' failed.
code example:
var v4 = new Proxy({},{}); this.__proto__ = v4; var v35 = "'use strict'; result = 0;" eval(v35);
No assertion failure.
This bug still exists.
tmikov
commented
1 year ago tmikov
commented
1 year ago
Bug Description
gradle cleanand confirmed this bug does not occur with JSCHermes version: 7d4cb023f9cfc87d2b0e8144ccad3bd329269af8 React Native version (if any): Android version (if any): Platform (most likely one of arm64-v8a, armeabi-v7a, x86, x86_64):
Steps To Reproduce
The provided code produces the following assertion failure in Hermes. I do not believe this is security issue.
Assertion:
hermes: ../lib/VM/JSObject.cpp:1378: static CallResult<bool> hermes::vm::JSObject::putNamedWithReceiver_RJS(Handle<hermes::vm::JSObject>, hermes::vm::Runtime *, hermes::vm::SymbolID, Handle<>, Handle<>, hermes::vm::PropOpFlags): Assertion `!opFlags.getMustExist() && "MustExist cannot be used with Proxy objects"' failed.code example:
The Expected Behavior
No assertion failure.