From f7d0f970f2231f7f938de66fb58ea764444b92df Mon Sep 17 00:00:00 2001
From: "Loren M. Lang" <lorenl@north-winds.org>
Date: Sat, 6 Jul 2024 00:55:43 -0700
Subject: [PATCH] Disable invalid warning about use of strncpy()

GCC 10+ is producing a warning that strncpy() may truncate without valid
nul termination, however, the code is easily checked that nul
termination is added immediately afterwards.

Signed-off-by: Loren M. Lang <lorenl@north-winds.org>
Signed-off-by: Aaron Conole <aconole@redhat.com>
---
 include/lldp.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/lldp.h b/include/lldp.h
index 8e36141..439c49a 100644
--- a/include/lldp.h
+++ b/include/lldp.h
@@ -55,6 +55,17 @@ typedef __u64 u64;
 #ifdef HAVE_STRLCPY
 #define STRNCPY_TERMINATED(DEST, SRC, N) \
   (void)strlcpy(DEST, SRC, N)
+#elif __GNUC__ >= 10
+#define STRNCPY_TERMINATED(DEST, SRC, N) \
+  do { \
+    if((N) > 0) { \
+      _Pragma("GCC diagnostic push") \
+      _Pragma("GCC diagnostic ignored \"-Wstringop-truncation\"") \
+      strncpy (DEST, SRC, (N) - 1); \
+      _Pragma("GCC diagnostic pop") \
+      DEST[(N) - 1] = '\0'; \
+    } \
+  } while (false)
 #else
 #define STRNCPY_TERMINATED(DEST, SRC, N) \
   do { \