| // RUN: %clang -ivfsoverlay foo.h -### %s 2>&1 | FileCheck %s | |
| // CHECK: "-ivfsoverlay" "foo.h" | |
| // RUN: not %clang -ivfsoverlay foo.h %s 2>&1 | FileCheck -check-prefix=CHECK-MISSING %s | |
| // CHECK-MISSING: virtual filesystem overlay file 'foo.h' not found |