ref: b04e71ed34cbbd9cb15f79cd20ba787438e6bcfb
dir: /test/asm/ff00+c-bad.err/
error: ff00+c-bad.asm(8):
Expected constant expression equal to $FF00 for "$ff00+c"
error: ff00+c-bad.asm(9):
Expected constant expression equal to $FF00 for "$ff00+c"
error: Assembly aborted (2 errors)!