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-rw-r--r--tests/cxx/external_including_internal.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/tests/cxx/external_including_internal.cc b/tests/cxx/external_including_internal.cc
index 012667a..3406761 100644
--- a/tests/cxx/external_including_internal.cc
+++ b/tests/cxx/external_including_internal.cc
@@ -7,6 +7,8 @@
//
//===----------------------------------------------------------------------===//
+// IWYU_ARGS: -I .
+
// Tests that when a non-internal file #includes an internal file,
// that we don't try to map the include back to ourself, and protects
// against a regression of a bug where we were both including a file