Zebediah Figura : ntdll: Handle unaligned SRW locks when using keyed events.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 28619e60358f75740df29d0ff0be80cbd0c9e10c
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=28619e60358f75740df29d0ff0be80cbd0c9e10c

Author: Zebediah Figura <z.figura12 at gmail.com>
Date:   Mon Apr 13 18:09:44 2020 -0500

ntdll: Handle unaligned SRW locks when using keyed events.

Signed-off-by: Zebediah Figura <z.figura12 at gmail.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/ntdll/sync.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/dlls/ntdll/sync.c b/dlls/ntdll/sync.c
index 5d1f5c3910..c0e1a30e2c 100644
--- a/dlls/ntdll/sync.c
+++ b/dlls/ntdll/sync.c
@@ -1985,11 +1985,11 @@ static NTSTATUS fast_release_srw_shared( RTL_SRWLOCK *lock )
 #define SRWLOCK_RES_SHARED            0x00000001
 
 #ifdef WORDS_BIGENDIAN
-#define srwlock_key_exclusive(lock)   (&lock->Ptr)
-#define srwlock_key_shared(lock)      ((void *)((char *)&lock->Ptr + 2))
+#define srwlock_key_exclusive(lock)   ((void *)(((ULONG_PTR)&lock->Ptr + 1) & ~1))
+#define srwlock_key_shared(lock)      ((void *)(((ULONG_PTR)&lock->Ptr + 3) & ~1))
 #else
-#define srwlock_key_exclusive(lock)   ((void *)((char *)&lock->Ptr + 2))
-#define srwlock_key_shared(lock)      (&lock->Ptr)
+#define srwlock_key_exclusive(lock)   ((void *)(((ULONG_PTR)&lock->Ptr + 3) & ~1))
+#define srwlock_key_shared(lock)      ((void *)(((ULONG_PTR)&lock->Ptr + 1) & ~1))
 #endif
 
 static inline void srwlock_check_invalid( unsigned int val )