X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/mLib/blobdiff_plain/b1a20beee623c83315c3ce21abc7bcce103c6efb..08bb7015a9e28c5c9d38fe05a6f6644bc21fa527:/utils/gprintf.h

diff --git a/utils/gprintf.h b/utils/gprintf.h
index d3c5f47..bcef7bb 100644
--- a/utils/gprintf.h
+++ b/utils/gprintf.h
@@ -36,6 +36,10 @@
 
 #include <stdarg.h>
 
+#ifndef MLIB_ARENA_H
+#  include "arena.h"
+#endif
+
 #ifndef MLIB_MACROS_H
 #  include "macros.h"
 #endif