ref: ad07c9deb9398ed3a7b9279362f38e37ccb40f0d
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)