From ee4fad50e714526ea313e5df7dd0584feff90d62 Mon Sep 17 00:00:00 2001
From: Ned Batchelder <ned@nedbatchelder.com>
Date: Thu, 20 Jun 2024 15:12:16 -0400
Subject: [PATCH] fix: mark the C extension as safe for free-threading #1799

---
 coverage/ctracer/module.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/coverage/ctracer/module.c b/coverage/ctracer/module.c
index d564a8128..6a499fa44 100644
--- a/coverage/ctracer/module.c
+++ b/coverage/ctracer/module.c
@@ -31,6 +31,10 @@ PyInit_tracer(void)
         return NULL;
     }
 
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     if (CTracer_intern_strings() < 0) {
         return NULL;
     }