1 # Comment directives do not suppress diagnostics for unused check prefixes.
3 RUN: echo 'foo' > %t.in
4 RUN: echo 'COM: foo' > %t.chk
5 RUN: echo 'RUN: echo' >> %t.chk
6 RUN: %ProtectFileCheckOutput not FileCheck %t.chk < %t.in 2>&1 | FileCheck %s
8 CHECK: error: no check strings found with prefix 'CHECK:'