ref: 646fc62b89f10a9de203d3989a7e9a140557f88f
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)