Piotr Caban : msvcr120: Fix exception object refcounting in __ExceptionPtrAssign.

[Alexandre Julliard]

Module: wine
Branch: stable
Commit: 1e8ac900d2de9da2b6621da9dcd515acc75856a4
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=1e8ac900d2de9da2b6621da9d...

Author: Piotr Caban <piotr(a)codeweavers.com>
Date:   Thu Jul 13 19:15:06 2017 +0200

msvcr120: Fix exception object refcounting in __ExceptionPtrAssign.

Signed-off-by: Piotr Caban <piotr(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>
(cherry picked from commit ab313dd3beb7e495b36f8320ffc2354b9c854d51)
Signed-off-by: Michael Stefaniuc <mstefani(a)winehq.org>

---

 dlls/msvcrt/cpp.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/dlls/msvcrt/cpp.c b/dlls/msvcrt/cpp.c
index 4d0d9b5..1277b40 100644
--- a/dlls/msvcrt/cpp.c
+++ b/dlls/msvcrt/cpp.c
@@ -1355,7 +1355,12 @@ void __cdecl __ExceptionPtrAssign(exception_ptr *ep, const exception_ptr *assign
     TRACE("(%p %p)\n", ep, assign);
 
     /* don't destroy object stored in ep */
+    if (ep->ref)
+        InterlockedDecrement(ep->ref);
+
     *ep = *assign;
+    if (ep->ref)
+        InterlockedIncrement(ep->ref);
 }
 
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