From 54065bb1d08ff0e75ec2165543daa467dd4f207f Mon Sep 17 00:00:00 2001
From: Jeremy Yallop <yallop@gmail.com>
Date: Tue, 31 May 2016 20:20:46 +0100
Subject: Add an -e option to ocamlyacc to reject grammars with conflicts.

---
 yacc/mkpar.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'yacc/mkpar.c')

diff --git a/yacc/mkpar.c b/yacc/mkpar.c
index 79b2f928bd..8064f5b3b1 100644
--- a/yacc/mkpar.c
+++ b/yacc/mkpar.c
@@ -47,7 +47,11 @@ void make_parser(void)
     find_final_state();
     remove_conflicts();
     unused_rules();
-    if (SRtotal + RRtotal > 0) total_conflicts();
+    if (SRtotal + RRtotal > 0) {
+        total_conflicts();
+        if (eflag)
+            forbidden_conflicts();
+    }
     defreds();
 }
 
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