From a74bdd2fcc5facb907136ed133399a9ca4b9dd3d Mon Sep 17 00:00:00 2001
From: anon <anon@anon.anon>
Date: Sun, 15 Sep 2024 15:14:49 +0200
Subject: [PATCH] do not segv on empty %top

---
 source/main.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/source/main.c b/source/main.c
index 04db970..993534a 100644
--- a/source/main.c
+++ b/source/main.c
@@ -73,7 +73,9 @@ void dump_output(void) {
     free(sprint_buffer);
 
     // Definition section
-    fputs(top, yyout);
+    if (top) {
+        fputs(top, yyout);
+    }
    
     // Rule section
     dump_rule_table("enter_cases", ENTER_RULE);