From d276842fd24985b3fe7fcbad34d19f8e877fbb44 Mon Sep 17 00:00:00 2001
From: jrx <jerome.git@eventuallyconsultant.com>
Date: Fri, 9 Aug 2024 15:00:29 +0200
Subject: [PATCH] another `off by one`

---
 src/decoders/decoder.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/decoders/decoder.rs b/src/decoders/decoder.rs
index 7004f1e..aedc4ec 100644
--- a/src/decoders/decoder.rs
+++ b/src/decoders/decoder.rs
@@ -37,10 +37,14 @@ pub(crate) fn check_objects(
     let mut index = item_index;
     let precision_item = 0x12;
 
+    if index >= message_values.len() {
+        return format!("Index out of bounds for FirehoseItemInfo Vec. Got adjusted index {}, Vec size is {}. This should not have happened", index, message_values.len());
+    }
+
     // Increment index get the actual firehose item data
     if item_type == &precision_item {
         index += 1;
-        if index > message_values.len() {
+        if index >= message_values.len() {
             return format!("Index out of bounds for FirehoseItemInfo Vec. Got adjusted index {}, Vec size is {}. This should not have happened", index, message_values.len());
         }
     }