From e3e21cc0d86c395b7043b80063bc8871173438d9 Mon Sep 17 00:00:00 2001
From: Akim Demaille <akim.demaille@gmail.com>
Date: Thu, 2 Apr 2020 06:59:35 +0200
Subject: [PATCH] examples: reccalc: compile cleanly in C99

See https://trac.macports.org/ticket/59927.

* examples/c/reccalc/parse.y: C99 does not allow multiple typedefs.
---
 examples/c/reccalc/parse.y | 3 +++
 1 file changed, 3 insertions(+)

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