From d7a4f1fd253facecdd529d255fec713da2bd3bd3 Mon Sep 17 00:00:00 2001
From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Wed, 1 Mar 2023 11:34:02 +0100
Subject: [PATCH] dnsdist: Prevent a false-positive warning from the compiler
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```
In file included from xsk.hh:50,
                 from xsk.cc:23:
In function ‘xdp_desc* xsk_ring_prod__tx_desc(xsk_ring_prod*, __u32)’,
    inlined from ‘void XskSocket::send(std::vector<std::unique_ptr<XskPacket>, std::allocator<std::unique_ptr<XskPacket> > >&)’ at xsk.cc:176:28:
/usr/include/xdp/xsk.h:76:27: warning: ‘idx’ may be used uninitialized [-Wmaybe-uninitialized]
   76 |         return &descs[idx & tx->mask];
      |                       ~~~~^~~~~~~~~~
```
---
 pdns/xsk.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pdns/xsk.cc b/pdns/xsk.cc
index f43d4a3c85..778d3cf4ae 100644
--- a/pdns/xsk.cc
+++ b/pdns/xsk.cc
@@ -167,7 +167,7 @@ void XskSocket::send(std::vector<XskPacketPtr>& packets)
   if (packetSize == 0) {
     return;
   }
-  uint32_t idx;
+  uint32_t idx{0};
   if (xsk_ring_prod__reserve(&tx, packetSize, &idx) != packets.size()) {
     return;
   }
-- 
2.47.2