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LibJS: Restore the environment if an exception is thrown in 'with' block

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davidot 2021-09-08 20:46:11 +02:00 • committed by Linus Groh
parent 4175be6960
commit db0a48d34c
2 changed files with 24 additions and 2 deletions
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5
Userland/Libraries/LibJS/AST.cpp
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@ -379,12 +379,13 @@ Value WithStatement::execute(Interpreter& interpreter, GlobalObject& global_obje
// 6. Let C be the result of evaluating Statement.
auto result = interpreter.execute_statement(global_object, m_body).value_or(js_undefined());
if (interpreter.exception())
return {};
// 7. Set the running execution context's LexicalEnvironment to oldEnv.
interpreter.vm().running_execution_context().lexical_environment = old_environment;
if (interpreter.exception())
return {};
// 8. Return Completion(UpdateEmpty(C, undefined)).
return result;
}