ref: 6655e04ef01bd78acd01f5d9efca4d50340b0a0f
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)