From 46b8d9f3b96cd4932c7e1b4dcc8ab9d63db19a2e Mon Sep 17 00:00:00 2001
From: Ben Siraphob <bensiraphob@gmail.com>
Date: Fri, 14 Nov 2025 18:21:17 -0500
Subject: [PATCH] tetragon: fix BPF compilation with clang 19

Add -Wno-default-const-init-var-unsafe flag to suppress errors about
uninitialized const variables in BPF code. This issue occurs with newer
versions of clang where BPF_CORE_READ macro expansion creates const
variables that trigger the default-const-init-var-unsafe warning.
---
 pkgs/by-name/te/tetragon/package.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/by-name/te/tetragon/package.nix b/pkgs/by-name/te/tetragon/package.nix
index e2e3434cefa5..75df5af8905f 100644
--- a/pkgs/by-name/te/tetragon/package.nix
+++ b/pkgs/by-name/te/tetragon/package.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation (finalAttrs: {
   env = {
     LOCAL_CLANG = 1;
     LOCAL_CLANG_FORMAT = 1;
-    NIX_CFLAGS_COMPILE = "-fno-stack-protector -Qunused-arguments";
+    NIX_CFLAGS_COMPILE = "-fno-stack-protector -Qunused-arguments -Wno-default-const-init-var-unsafe";
   };
 
   buildPhase = ''