ref: c7a92d3104807f2831b706642adbd3492e440ac3
dir: /test/link/section-union/different-data.out/
error: Section "different data" is of type ROM0, which cannot be unionized
---
error: <stdin>(16):
Cannot declare ROM sections as UNION
FATAL: <stdin>(16):
Cannot create section "different data" (1 error)