From 29a6490c63b7581ae20361b64c4ad28350a1bbbc Mon Sep 17 00:00:00 2001
From: Ivan Maidanski <ivmai@mail.ru>
Date: Tue, 26 Sep 2017 01:12:30 +0300
Subject: [PATCH] Fix double lock in pthread_detach (Cygwin, winpthreads)

* win32_threads.c [GC_PTHREADS] (GC_pthread_detach): Do not hold the
allocation lock when GC_lookup_pthread is invoked.
---
 win32_threads.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/win32_threads.c b/win32_threads.c
index 23acb3bb..a94e1301 100644
--- a/win32_threads.c
+++ b/win32_threads.c
@@ -2654,9 +2654,7 @@ GC_INNER void GC_thr_init(void)
     DCL_LOCK_STATE;
 
     GC_ASSERT(!GC_win32_dll_threads);
-    LOCK();
     t = GC_lookup_pthread(thread);
-    UNLOCK();
     result = pthread_detach(thread);
     if (result == 0) {
       if (NULL == t) ABORT("Thread not registered");
-- 
2.40.0