ref: b06e3b239d128826a33c97f38217cda0c25fee54
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)