ref: d37aa93a7d0a0f17da1fe127ae6ec3a3a092477e
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)