ref: a16d3d640512b4bec17eaafa3ea4a216f71bc551
dir: /test/link/section-union/different-size.out/
error: Section "different section sizes" is of type ROM0, which cannot be unionized --- error: <stdin>(16): Cannot declare ROM sections as UNION FATAL: <stdin>(16): Cannot create section "different section sizes" (1 error)