diff --git a/tests/regression/46-apron2/84-relation-extern.c b/tests/regression/46-apron2/84-relation-extern.c
new file mode 100644
index 0000000000..ffd8f9e2ce
--- /dev/null
+++ b/tests/regression/46-apron2/84-relation-extern.c
@@ -0,0 +1,21 @@
+// SKIP PARAM: --set ana.activated[+] apron
+#include <pthread.h>
+#include <goblint.h>
+
+extern int g;
+
+void *t_fun(void *arg) {
+  return NULL;
+}
+
+int main() {
+  pthread_t id;
+  pthread_create(&id, NULL, t_fun, NULL);
+
+  if (g) // NOWARN
+    __goblint_check(1); // reachable
+  else
+    __goblint_check(1); // reachable
+
+  return 0;
+}