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LibJS/Bytecode: Use ToString instead of generic add() in ConcatString

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This avoids invoking valueOf() on the values, which is observable.

48 new passes on test262. :^)
This commit is contained in:
Andreas Kling 2023-06-25 10:55:35 +02:00
commit 8873bf5016
Notes: sideshowbarker 2024-07-17 02:38:39 +09:00
1 changed files with 2 additions and 1 deletions
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3
Userland/Libraries/LibJS/Bytecode/Op.cpp
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@ -380,7 +380,8 @@ ThrowCompletionOr<void> CopyObjectExcludingProperties::execute_impl(Bytecode::In
ThrowCompletionOr<void> ConcatString::execute_impl(Bytecode::Interpreter& interpreter) const
{
auto& vm = interpreter.vm();
interpreter.reg(m_lhs) = TRY(add(vm, interpreter.reg(m_lhs), interpreter.accumulator()));
auto string = TRY(interpreter.accumulator().to_primitive_string(vm));
interpreter.reg(m_lhs) = PrimitiveString::create(vm, interpreter.reg(m_lhs).as_string(), string);
return {};
}