ref: 01777c96c8b074d9587045f271a9edc0e19b718d
dir: /test/link/section-union/different-syntaxes.out/
error: Section "different syntaxes" is of type ROM0, which cannot be unionized
---
error: <stdin>(18):
Cannot declare ROM sections as UNION
FATAL: <stdin>(18):
Cannot create section "different syntaxes" (1 error)