ref: 8b1cc72f0933b4be8c0a4bef580e1177d91c78d1
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)