From 2bcd3074cc5fed0bda36c3f8e6f8220d961c7e00 Mon Sep 17 00:00:00 2001
From: CV-GPhL <vonrhein@globalphasing.com>
Date: Wed, 4 Feb 2026 11:20:21 +0100
Subject: [PATCH] Null terminate buffer in file.c

Ensure the buffer is null terminated after allocation - otherwise correct results from strcmp below is undefined.
---
 src/file.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/file.c b/src/file.c
index a279768..720fe21 100644
--- a/src/file.c
+++ b/src/file.c
@@ -683,6 +683,9 @@ herr_t det_visit_callback(hid_t root_id, const char *name,
       ERROR_JUMP(-1, free_buffer, message);
     }
 
+    /* ensure the buffer is null terminated */
+    buffer[H5Tget_size(t_id)] = '\0';
+
     /* test for NXdata or NXdetector */
     {
       if      (strcmp("NXdata", buffer) == 0) {