From 1fbb36afadc7cb35c5f80bc3ee3bb817aeab303e Mon Sep 17 00:00:00 2001
From: Martin Quinson <martin.quinson@ens-rennes.fr>
Date: Sun, 16 Oct 2022 16:53:27 +0200
Subject: [PATCH] Deal with PTHREAD_STATIC_INITIALIZER if it behave as in glibc

---
 src/sthread/sthread_impl.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/sthread/sthread_impl.cpp b/src/sthread/sthread_impl.cpp
index 4ef0265325..efcdcdda83 100644
--- a/src/sthread/sthread_impl.cpp
+++ b/src/sthread/sthread_impl.cpp
@@ -109,22 +109,38 @@ int sthread_mutex_init(sthread_mutex_t* mutex, const void* /*pthread_mutexattr_t
 
 int sthread_mutex_lock(sthread_mutex_t* mutex)
 {
+  /* At least in glibc, PTHREAD_STATIC_INITIALIZER sets every fields to 0 */
+  if (mutex->mutex == nullptr)
+    sthread_mutex_init(mutex, nullptr);
+
   static_cast<sg4::Mutex*>(mutex->mutex)->lock();
   return 0;
 }
 
 int sthread_mutex_trylock(sthread_mutex_t* mutex)
 {
+  /* At least in glibc, PTHREAD_STATIC_INITIALIZER sets every fields to 0 */
+  if (mutex->mutex == nullptr)
+    sthread_mutex_init(mutex, nullptr);
+
   return static_cast<sg4::Mutex*>(mutex->mutex)->try_lock();
 }
 
 int sthread_mutex_unlock(sthread_mutex_t* mutex)
 {
+  /* At least in glibc, PTHREAD_STATIC_INITIALIZER sets every fields to 0 */
+  if (mutex->mutex == nullptr)
+    sthread_mutex_init(mutex, nullptr);
+
   static_cast<sg4::Mutex*>(mutex->mutex)->unlock();
   return 0;
 }
 int sthread_mutex_destroy(sthread_mutex_t* mutex)
 {
+  /* At least in glibc, PTHREAD_STATIC_INITIALIZER sets every fields to 0 */
+  if (mutex->mutex == nullptr)
+    sthread_mutex_init(mutex, nullptr);
+
   intrusive_ptr_release(static_cast<sg4::Mutex*>(mutex->mutex));
   return 0;
 }
-- 
2.20.1