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41a53c0a23
This change makes StackFrame methods virtual to enable subclass overrides and introduces BorrowedStackFrame, a wrapper that presents an existing StackFrame with a different frame index. This enables creating synthetic frame views or renumbering frames without copying the underlying frame data, which is useful for frame manipulation scenarios. This also adds a new borrowed-info format entity to show what was the original frame index of the borrowed frame. Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>