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LibJS: Reset Bytecode::Interpreter's m_return_value when leaving run()

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Otherwise it will cause complete unwind since all parent run() loops
will see the same m_return_value being non-empty and break out.
This commit is contained in:
Andreas Kling 2021-06-07 13:57:02 +02:00
parent 9330163b0b
commit 845f2826aa
Notes: sideshowbarker 2024-07-18 12:41:49 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/845f2826aa0
1 changed files with 4 additions and 3 deletions
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7
Userland/Libraries/LibJS/Bytecode/Interpreter.cpp
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@ -77,16 +77,17 @@ Value Interpreter::run(Bytecode::Block const& block)
m_register_windows.take_last();
m_return_value = m_return_value.value_or(js_undefined());
auto return_value = m_return_value.value_or(js_undefined());
m_return_value = {};
// NOTE: The return value from a called function is put into $0 in the caller context.
if (!m_register_windows.is_empty())
m_register_windows.last()[0] = m_return_value;
m_register_windows.last()[0] = return_value;
if (vm().call_stack().size() == 1)
vm().pop_call_frame();
return m_return_value;
return return_value;
}
}