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-rw-r--r--frontends/rtlil/rtlil_parser.y2
1 files changed, 2 insertions, 0 deletions
diff --git a/frontends/rtlil/rtlil_parser.y b/frontends/rtlil/rtlil_parser.y
index 67aeb10e0..7d99b2c42 100644
--- a/frontends/rtlil/rtlil_parser.y
+++ b/frontends/rtlil/rtlil_parser.y
@@ -22,6 +22,8 @@
*
*/
+%require "3.0"
+
%{
#include <list>
#include "frontends/rtlil/rtlil_frontend.h"