Alexandre Julliard : user.exe: Clear out the thunk array to catch invalid winprocs.
Alexandre Julliard
julliard at winehq.org
Fri Aug 7 10:42:27 CDT 2020
Module: wine
Branch: stable
Commit: 38d64fdb129c7e7ddb5aac0e549c84be41341e49
URL: https://source.winehq.org/git/wine.git/?a=commit;h=38d64fdb129c7e7ddb5aac0e549c84be41341e49
Author: Alexandre Julliard <julliard at winehq.org>
Date: Thu Mar 26 15:31:21 2020 +0100
user.exe: Clear out the thunk array to catch invalid winprocs.
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=48814
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
(cherry picked from commit 64bd952b85eb183d97b438a3d2695b2bf78d17ea)
Signed-off-by: Michael Stefaniuc <mstefani at winehq.org>
---
dlls/user.exe16/message.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/dlls/user.exe16/message.c b/dlls/user.exe16/message.c
index 14e7a19889..e3ca3fd779 100644
--- a/dlls/user.exe16/message.c
+++ b/dlls/user.exe16/message.c
@@ -152,7 +152,8 @@ static WNDPROC16 alloc_win16_thunk( WNDPROC handle )
{
assert( MAX_WINPROCS16 * sizeof(WINPROC_THUNK) <= 0x10000 );
- if (!(thunk_selector = GlobalAlloc16( GMEM_FIXED, MAX_WINPROCS16 * sizeof(WINPROC_THUNK) )))
+ if (!(thunk_selector = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT,
+ MAX_WINPROCS16 * sizeof(WINPROC_THUNK) )))
return NULL;
PrestoChangoSelector16( thunk_selector, thunk_selector );
thunk_array = GlobalLock16( thunk_selector );
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