From 2da3eb1c9cfbd3a5048910b19d6e6e5389fc8eaa Mon Sep 17 00:00:00 2001
From: Adithya <91655764+Pineapple-Soup@users.noreply.github.com>
Date: Tue, 5 Aug 2025 19:09:23 +0000
Subject: [PATCH] fix: off-by-one error in `convertPathnameToDirName`

---
 programs/util.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/programs/util.c b/programs/util.c
index 652530b1223..78299b01c13 100644
--- a/programs/util.c
+++ b/programs/util.c
@@ -1148,11 +1148,11 @@ static void convertPathnameToDirName(char *pathname)
     /* remove trailing '/' chars */
     len = strlen(pathname);
     assert(len > 0);
-    while (pathname[len] == PATH_SEP) {
-        pathname[len] = '\0';
+    while (pathname[len-1] == PATH_SEP) {
+        pathname[len-1] = '\0';
         len--;
+        if (len == 0) return;
     }
-    if (len == 0) return;
 
     /* if input is a single file, return '.' instead. i.e.
      * "xyz/abc/file.txt" => "xyz/abc"