1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/gthr-win32.h b/gcc/gthr-win32.h
index a27dccf7126..80b2b71c9e7 100644
--- a/gcc/gthr-win32.h
+++ b/gcc/gthr-win32.h
@@ -562,7 +562,8 @@ __gthread_once (__gthread_once_t *once, void (*func) (void))
    leaks, especially in threaded applications making extensive use of
    C++ EH. Mingw uses a thread-support DLL to work-around this problem.  */
 static inline int
-__gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
+__gthread_key_create (__gthread_key_t *key,
+		      void (*dtor) (void *) __attribute__((unused)))
 {
   int status = 0;
   DWORD tls_index = TlsAlloc ();