From f5c2f9280cbf06b716a5849cc4f9005a37c49f19 Mon Sep 17 00:00:00 2001
From: Ivan Nardi <12729895+IvanNardi@users.noreply.github.com>
Date: Thu, 19 Jan 2023 14:13:17 +0100
Subject: Fix undefined-behaviour in ahocorasick callback (#1864)

```
ndpi_main.c:2119:28: runtime error: left shift of 1 by 31 places cannot be represented in type 'int'
```
Found by oss-fuzz
See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=55226
---
 src/lib/ndpi_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
index 21ec14de3..13a800183 100644
--- a/src/lib/ndpi_main.c
+++ b/src/lib/ndpi_main.c
@@ -2116,7 +2116,7 @@ int ac_domain_match_handler(AC_MATCH_t *m, AC_TEXT_t *txt, AC_REP_t *match) {
      * the length of the pattern is longer than that of the previous one.
      * Skip shorter (less precise) templates.
      */
-    if(!(m->match_map & (1 << i)))
+    if(!(m->match_map & (1u << i)))
       continue;
     start = end - pattern->length;
 
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