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-rw-r--r--examples/c/reccalc/parse.y3
1 files changed, 3 insertions, 0 deletions
diff --git a/examples/c/reccalc/parse.y b/examples/c/reccalc/parse.y
index 6d645294..3de58afc 100644
--- a/examples/c/reccalc/parse.y
+++ b/examples/c/reccalc/parse.y
@@ -133,6 +133,9 @@ exp:
%%
// Epilogue (C code).
+// We already defined yyscan_t, don't let scan.h define it again.
+#define YY_TYPEDEF_YY_SCANNER_T
+typedef void* yyscan_t;
#include "scan.h"
result