// RUN: filechecker --check-prefix ANOTHER-PREFIX --input-file %s %s
// RUN: not filechecker --check-prefix PREFIX --input-file %s %s 2>&1 | filechecker --check-prefix CHECK-NONEXISTENT-PREFIX %s

foobar
; ANOTHER-PREFIX: foobar

; We use regex to match the colon so that filechecker won't think it is a check
; prefix.
; CHECK-NONEXISTENT-PREFIX: error: no check strings found with prefix 'PREFIX{{:}}'
