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-rw-r--r--tests/cxx/prefix_header_attribution.cc3
1 files changed, 3 insertions, 0 deletions
diff --git a/tests/cxx/prefix_header_attribution.cc b/tests/cxx/prefix_header_attribution.cc
index b5376a3..1ff080b 100644
--- a/tests/cxx/prefix_header_attribution.cc
+++ b/tests/cxx/prefix_header_attribution.cc
@@ -7,6 +7,9 @@
//
//===----------------------------------------------------------------------===//
+// IWYU_ARGS: -Xiwyu --prefix_header_includes=remove \
+// -include tests/cxx/prefix_header_attribution-d1.h -I .
+
// Tests that when IWYU attributes macros and placement operator new to
// providing headers, it preserves enough information to detect if providing
// header is prefix header.