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-rw-r--r--src/expand/rustc_diagnostics.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/expand/rustc_diagnostics.cpp b/src/expand/rustc_diagnostics.cpp
index e9990a93..b5337d26 100644
--- a/src/expand/rustc_diagnostics.cpp
+++ b/src/expand/rustc_diagnostics.cpp
@@ -7,6 +7,7 @@
*/
#include <synext.hpp>
#include <parse/common.hpp> // TokenTree etc
+#include <parse/ttstream.hpp>
class CExpanderRegisterDiagnostic:
public ExpandProcMacro