ref: fba77c4dce6a6d67eb296feca2b8a1ca492fafe2
dir: /test/link/section-union/data-overlay.out/
error: Section "overlaid data" is of type ROM0, which cannot be unionized --- ERROR: <stdin>(18): Cannot declare ROM sections as UNION FATAL: <stdin>(18): Cannot create section "overlaid data" (1 error)