From 87dc833429dd3c0e61c7a1c49c317367187e4a03 Mon Sep 17 00:00:00 2001
From: Laurent Mazet <mazet@softndesign.org>
Date: Thu, 28 Dec 2023 22:49:50 +0100
Subject: [PATCH] fix an incorrect free

---
 calc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/calc.c b/calc.c
index b2b3fbf..beae0c1 100644
--- a/calc.c
+++ b/calc.c
@@ -211,13 +211,16 @@ int main (int argc, char *argv[])
 
         if (mode) {
             free (buffer);
+            buffer = NULL;
         } else {
             memset (buffer, 0, BUFFER_SIZE);
         }
         fflush (stdout);
     }
 
-    clean_read_line (buffer);
+    if (mode) {
+        clean_read_line (buffer);
+    }
 
     free_format ();
 
-- 
2.30.2