From f28ef7ee29ee1e8a1df092f5c4fff0497718415c Mon Sep 17 00:00:00 2001
From: mlugg <mlugg@mlugg.co.uk>
Date: Thu, 5 Jun 2025 12:22:15 +0100
Subject: [PATCH] tests: extern threadlocals require LLVM

This is a current limitation of our self-hosted linkers.
---
 test/standalone/mix_c_files/build.zig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/test/standalone/mix_c_files/build.zig b/test/standalone/mix_c_files/build.zig
index 32b1d57b5c..a7415b4f01 100644
--- a/test/standalone/mix_c_files/build.zig
+++ b/test/standalone/mix_c_files/build.zig
@@ -24,6 +24,8 @@ fn add(b: *std.Build, test_step: *std.Build.Step, optimize: std.builtin.Optimize
             .optimize = optimize,
             .link_libc = true,
         }),
+        // extern threadlocals are not implemented in the self-hosted linker
+        .use_llvm = true,
     });
     exe.root_module.addCSourceFile(.{ .file = b.path("test.c"), .flags = &[_][]const u8{"-std=c11"} });