All other spinlock functions which writes to spinlock storage already mark
spinlock storage as volatile, so do it also in pthread_spin_init.
This should ensure that compiler does not reorder initialization of
spinlock with other code.
---
mingw-w64-libraries/winpthreads/src/spinlock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mingw-w64-libraries/winpthreads/src/spinlock.c
b/mingw-w64-libraries/winpthreads/src/spinlock.c
index eb21509d607f..27ad7627fd25 100644
--- a/mingw-w64-libraries/winpthreads/src/spinlock.c
+++ b/mingw-w64-libraries/winpthreads/src/spinlock.c
@@ -42,7 +42,7 @@ typedef intptr_t spinlock_word_t;
int
pthread_spin_init (pthread_spinlock_t *lock, int pshared)
{
- spinlock_word_t *lk = (spinlock_word_t *)lock;
+ volatile spinlock_word_t *lk = (spinlock_word_t *)lock;
*lk = -1;
return 0;
}
--
2.20.1
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