Andreas Kling 7e85bb251f LibJS: Keep SourceCode alive in SharedFunctionInstanceData ...

SharedFunctionInstanceData::m_source_text is a Utf16View into the
SourceCode that the function was parsed from. Previously, the
SourceCode was kept alive transitively through the AST nodes.

As we move towards dropping AST nodes after compilation, we need to
ensure the SourceCode outlives the view. Add a RefPtr<SourceCode>
to SharedFunctionInstanceData so m_source_text remains valid even
after the AST is gone. This is needed for Function.prototype.toString
which accesses source_text() at any point during the function's
lifetime.

2026-02-11 23:57:41 +01:00

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